plugeth/eth/api.go
Jeffrey Wilcke 1f3596c25a core: transition db now also returns the required gas amount
Exposes some core methods to transition and compute new state
information and adds an additional return value to the transition db
method to fetch required gas for that particular message (excluding gas
refunds from any SSTORE[X] = 0 and SUICIDE.

Fixes #2395
2016-04-01 01:01:10 +02:00

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// Copyright 2015 The go-ethereum Authors
// 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 eth
import (
"bytes"
"encoding/json"
"errors"
"fmt"
"io"
"io/ioutil"
"math/big"
"os"
"sync"
"time"
"github.com/ethereum/ethash"
"github.com/ethereum/go-ethereum/accounts"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/common/compiler"
"github.com/ethereum/go-ethereum/core"
"github.com/ethereum/go-ethereum/core/state"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/core/vm"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/ethdb"
"github.com/ethereum/go-ethereum/event"
"github.com/ethereum/go-ethereum/logger"
"github.com/ethereum/go-ethereum/logger/glog"
"github.com/ethereum/go-ethereum/miner"
"github.com/ethereum/go-ethereum/p2p"
"github.com/ethereum/go-ethereum/rlp"
"github.com/ethereum/go-ethereum/rpc"
"gopkg.in/fatih/set.v0"
)
const defaultGas = uint64(90000)
// blockByNumber is a commonly used helper function which retrieves and returns
// the block for the given block number, capable of handling two special blocks:
// rpc.LatestBlockNumber and rpc.PendingBlockNumber. It returns nil when no block
// could be found.
func blockByNumber(m *miner.Miner, bc *core.BlockChain, blockNr rpc.BlockNumber) *types.Block {
// Pending block is only known by the miner
if blockNr == rpc.PendingBlockNumber {
block, _ := m.Pending()
return block
}
// Otherwise resolve and return the block
if blockNr == rpc.LatestBlockNumber {
return bc.CurrentBlock()
}
return bc.GetBlockByNumber(uint64(blockNr))
}
// stateAndBlockByNumber is a commonly used helper function which retrieves and
// returns the state and containing block for the given block number, capable of
// handling two special states: rpc.LatestBlockNumber and rpc.PendingBlockNumber.
// It returns nil when no block or state could be found.
func stateAndBlockByNumber(m *miner.Miner, bc *core.BlockChain, blockNr rpc.BlockNumber, chainDb ethdb.Database) (*state.StateDB, *types.Block, error) {
// Pending state is only known by the miner
if blockNr == rpc.PendingBlockNumber {
block, state := m.Pending()
return state, block, nil
}
// Otherwise resolve the block number and return its state
block := blockByNumber(m, bc, blockNr)
if block == nil {
return nil, nil, nil
}
stateDb, err := state.New(block.Root(), chainDb)
return stateDb, block, err
}
// PublicEthereumAPI provides an API to access Ethereum related information.
// It offers only methods that operate on public data that is freely available to anyone.
type PublicEthereumAPI struct {
e *Ethereum
gpo *GasPriceOracle
}
// NewPublicEthereumAPI creates a new Ethereum protocol API.
func NewPublicEthereumAPI(e *Ethereum) *PublicEthereumAPI {
return &PublicEthereumAPI{e, NewGasPriceOracle(e)}
}
// GasPrice returns a suggestion for a gas price.
func (s *PublicEthereumAPI) GasPrice() *big.Int {
return s.gpo.SuggestPrice()
}
// GetCompilers returns the collection of available smart contract compilers
func (s *PublicEthereumAPI) GetCompilers() ([]string, error) {
solc, err := s.e.Solc()
if err != nil {
return nil, err
}
if solc != nil {
return []string{"Solidity"}, nil
}
return []string{}, nil
}
// CompileSolidity compiles the given solidity source
func (s *PublicEthereumAPI) CompileSolidity(source string) (map[string]*compiler.Contract, error) {
solc, err := s.e.Solc()
if err != nil {
return nil, err
}
if solc == nil {
return nil, errors.New("solc (solidity compiler) not found")
}
return solc.Compile(source)
}
// Etherbase is the address that mining rewards will be send to
func (s *PublicEthereumAPI) Etherbase() (common.Address, error) {
return s.e.Etherbase()
}
// see Etherbase
func (s *PublicEthereumAPI) Coinbase() (common.Address, error) {
return s.Etherbase()
}
// ProtocolVersion returns the current Ethereum protocol version this node supports
func (s *PublicEthereumAPI) ProtocolVersion() *rpc.HexNumber {
return rpc.NewHexNumber(s.e.EthVersion())
}
// Hashrate returns the POW hashrate
func (s *PublicEthereumAPI) Hashrate() *rpc.HexNumber {
return rpc.NewHexNumber(s.e.Miner().HashRate())
}
// Syncing returns false in case the node is currently not syncing with the network. It can be up to date or has not
// yet received the latest block headers from its pears. In case it is synchronizing:
// - startingBlock: block number this node started to synchronise from
// - currentBlock: block number this node is currently importing
// - highestBlock: block number of the highest block header this node has received from peers
// - pulledStates: number of state entries processed until now
// - knownStates: number of known state entries that still need to be pulled
func (s *PublicEthereumAPI) Syncing() (interface{}, error) {
origin, current, height, pulled, known := s.e.Downloader().Progress()
// Return not syncing if the synchronisation already completed
if current >= height {
return false, nil
}
// Otherwise gather the block sync stats
return map[string]interface{}{
"startingBlock": rpc.NewHexNumber(origin),
"currentBlock": rpc.NewHexNumber(current),
"highestBlock": rpc.NewHexNumber(height),
"pulledStates": rpc.NewHexNumber(pulled),
"knownStates": rpc.NewHexNumber(known),
}, nil
}
// PublicMinerAPI provides an API to control the miner.
// It offers only methods that operate on data that pose no security risk when it is publicly accessible.
type PublicMinerAPI struct {
e *Ethereum
agent *miner.RemoteAgent
}
// NewPublicMinerAPI create a new PublicMinerAPI instance.
func NewPublicMinerAPI(e *Ethereum) *PublicMinerAPI {
agent := miner.NewRemoteAgent()
e.Miner().Register(agent)
return &PublicMinerAPI{e, agent}
}
// Mining returns an indication if this node is currently mining.
func (s *PublicMinerAPI) Mining() bool {
return s.e.IsMining()
}
// SubmitWork can be used by external miner to submit their POW solution. It returns an indication if the work was
// accepted. Note, this is not an indication if the provided work was valid!
func (s *PublicMinerAPI) SubmitWork(nonce rpc.HexNumber, solution, digest common.Hash) bool {
return s.agent.SubmitWork(nonce.Uint64(), digest, solution)
}
// GetWork returns a work package for external miner. The work package consists of 3 strings
// result[0], 32 bytes hex encoded current block header pow-hash
// result[1], 32 bytes hex encoded seed hash used for DAG
// result[2], 32 bytes hex encoded boundary condition ("target"), 2^256/difficulty
func (s *PublicMinerAPI) GetWork() ([]string, error) {
if !s.e.IsMining() {
if err := s.e.StartMining(0, ""); err != nil {
return nil, err
}
}
if work, err := s.agent.GetWork(); err == nil {
return work[:], nil
} else {
glog.Infof("%v\n", err)
}
return nil, fmt.Errorf("mining not ready")
}
// SubmitHashrate can be used for remote miners to submit their hash rate. This enables the node to report the combined
// hash rate of all miners which submit work through this node. It accepts the miner hash rate and an identifier which
// must be unique between nodes.
func (s *PublicMinerAPI) SubmitHashrate(hashrate rpc.HexNumber, id common.Hash) bool {
s.agent.SubmitHashrate(id, hashrate.Uint64())
return true
}
// PrivateMinerAPI provides private RPC methods to control the miner.
// These methods can be abused by external users and must be considered insecure for use by untrusted users.
type PrivateMinerAPI struct {
e *Ethereum
}
// NewPrivateMinerAPI create a new RPC service which controls the miner of this node.
func NewPrivateMinerAPI(e *Ethereum) *PrivateMinerAPI {
return &PrivateMinerAPI{e: e}
}
// Start the miner with the given number of threads
func (s *PrivateMinerAPI) Start(threads rpc.HexNumber) (bool, error) {
s.e.StartAutoDAG()
err := s.e.StartMining(threads.Int(), "")
if err == nil {
return true, nil
}
return false, err
}
// Stop the miner
func (s *PrivateMinerAPI) Stop() bool {
s.e.StopMining()
return true
}
// SetExtra sets the extra data string that is included when this miner mines a block.
func (s *PrivateMinerAPI) SetExtra(extra string) (bool, error) {
if err := s.e.Miner().SetExtra([]byte(extra)); err != nil {
return false, err
}
return true, nil
}
// SetGasPrice sets the minimum accepted gas price for the miner.
func (s *PrivateMinerAPI) SetGasPrice(gasPrice rpc.Number) bool {
s.e.Miner().SetGasPrice(gasPrice.BigInt())
return true
}
// SetEtherbase sets the etherbase of the miner
func (s *PrivateMinerAPI) SetEtherbase(etherbase common.Address) bool {
s.e.SetEtherbase(etherbase)
return true
}
// StartAutoDAG starts auto DAG generation. This will prevent the DAG generating on epoch change
// which will cause the node to stop mining during the generation process.
func (s *PrivateMinerAPI) StartAutoDAG() bool {
s.e.StartAutoDAG()
return true
}
// StopAutoDAG stops auto DAG generation
func (s *PrivateMinerAPI) StopAutoDAG() bool {
s.e.StopAutoDAG()
return true
}
// MakeDAG creates the new DAG for the given block number
func (s *PrivateMinerAPI) MakeDAG(blockNr rpc.BlockNumber) (bool, error) {
if err := ethash.MakeDAG(uint64(blockNr.Int64()), ""); err != nil {
return false, err
}
return true, nil
}
// PublicTxPoolAPI offers and API for the transaction pool. It only operates on data that is non confidential.
type PublicTxPoolAPI struct {
e *Ethereum
}
// NewPublicTxPoolAPI creates a new tx pool service that gives information about the transaction pool.
func NewPublicTxPoolAPI(e *Ethereum) *PublicTxPoolAPI {
return &PublicTxPoolAPI{e}
}
// Content returns the transactions contained within the transaction pool.
func (s *PublicTxPoolAPI) Content() map[string]map[string]map[string][]*RPCTransaction {
content := map[string]map[string]map[string][]*RPCTransaction{
"pending": make(map[string]map[string][]*RPCTransaction),
"queued": make(map[string]map[string][]*RPCTransaction),
}
pending, queue := s.e.TxPool().Content()
// Flatten the pending transactions
for account, batches := range pending {
dump := make(map[string][]*RPCTransaction)
for nonce, txs := range batches {
nonce := fmt.Sprintf("%d", nonce)
for _, tx := range txs {
dump[nonce] = append(dump[nonce], newRPCPendingTransaction(tx))
}
}
content["pending"][account.Hex()] = dump
}
// Flatten the queued transactions
for account, batches := range queue {
dump := make(map[string][]*RPCTransaction)
for nonce, txs := range batches {
nonce := fmt.Sprintf("%d", nonce)
for _, tx := range txs {
dump[nonce] = append(dump[nonce], newRPCPendingTransaction(tx))
}
}
content["queued"][account.Hex()] = dump
}
return content
}
// Status returns the number of pending and queued transaction in the pool.
func (s *PublicTxPoolAPI) Status() map[string]*rpc.HexNumber {
pending, queue := s.e.TxPool().Stats()
return map[string]*rpc.HexNumber{
"pending": rpc.NewHexNumber(pending),
"queued": rpc.NewHexNumber(queue),
}
}
// Inspect retrieves the content of the transaction pool and flattens it into an
// easily inspectable list.
func (s *PublicTxPoolAPI) Inspect() map[string]map[string]map[string][]string {
content := map[string]map[string]map[string][]string{
"pending": make(map[string]map[string][]string),
"queued": make(map[string]map[string][]string),
}
pending, queue := s.e.TxPool().Content()
// Define a formatter to flatten a transaction into a string
var format = func(tx *types.Transaction) string {
if to := tx.To(); to != nil {
return fmt.Sprintf("%s: %v wei + %v × %v gas", tx.To().Hex(), tx.Value(), tx.Gas(), tx.GasPrice())
}
return fmt.Sprintf("contract creation: %v wei + %v × %v gas", tx.Value(), tx.Gas(), tx.GasPrice())
}
// Flatten the pending transactions
for account, batches := range pending {
dump := make(map[string][]string)
for nonce, txs := range batches {
nonce := fmt.Sprintf("%d", nonce)
for _, tx := range txs {
dump[nonce] = append(dump[nonce], format(tx))
}
}
content["pending"][account.Hex()] = dump
}
// Flatten the queued transactions
for account, batches := range queue {
dump := make(map[string][]string)
for nonce, txs := range batches {
nonce := fmt.Sprintf("%d", nonce)
for _, tx := range txs {
dump[nonce] = append(dump[nonce], format(tx))
}
}
content["queued"][account.Hex()] = dump
}
return content
}
// PublicAccountAPI provides an API to access accounts managed by this node.
// It offers only methods that can retrieve accounts.
type PublicAccountAPI struct {
am *accounts.Manager
}
// NewPublicAccountAPI creates a new PublicAccountAPI.
func NewPublicAccountAPI(am *accounts.Manager) *PublicAccountAPI {
return &PublicAccountAPI{am: am}
}
// Accounts returns the collection of accounts this node manages
func (s *PublicAccountAPI) Accounts() ([]accounts.Account, error) {
return s.am.Accounts()
}
// PrivateAccountAPI provides an API to access accounts managed by this node.
// It offers methods to create, (un)lock en list accounts.
type PrivateAccountAPI struct {
am *accounts.Manager
}
// NewPrivateAccountAPI create a new PrivateAccountAPI.
func NewPrivateAccountAPI(am *accounts.Manager) *PrivateAccountAPI {
return &PrivateAccountAPI{am}
}
// ListAccounts will return a list of addresses for accounts this node manages.
func (s *PrivateAccountAPI) ListAccounts() ([]common.Address, error) {
accounts, err := s.am.Accounts()
if err != nil {
return nil, err
}
addresses := make([]common.Address, len(accounts))
for i, acc := range accounts {
addresses[i] = acc.Address
}
return addresses, nil
}
// NewAccount will create a new account and returns the address for the new account.
func (s *PrivateAccountAPI) NewAccount(password string) (common.Address, error) {
acc, err := s.am.NewAccount(password)
if err == nil {
return acc.Address, nil
}
return common.Address{}, err
}
// UnlockAccount will unlock the account associated with the given address with the given password for duration seconds.
// It returns an indication if the action was successful.
func (s *PrivateAccountAPI) UnlockAccount(addr common.Address, password string, duration int) bool {
if err := s.am.TimedUnlock(addr, password, time.Duration(duration)*time.Second); err != nil {
glog.V(logger.Info).Infof("%v\n", err)
return false
}
return true
}
// LockAccount will lock the account associated with the given address when it's unlocked.
func (s *PrivateAccountAPI) LockAccount(addr common.Address) bool {
return s.am.Lock(addr) == nil
}
// PublicBlockChainAPI provides an API to access the Ethereum blockchain.
// It offers only methods that operate on public data that is freely available to anyone.
type PublicBlockChainAPI struct {
config *core.ChainConfig
bc *core.BlockChain
chainDb ethdb.Database
eventMux *event.TypeMux
am *accounts.Manager
miner *miner.Miner
}
// NewPublicBlockChainAPI creates a new Etheruem blockchain API.
func NewPublicBlockChainAPI(config *core.ChainConfig, bc *core.BlockChain, m *miner.Miner, chainDb ethdb.Database, eventMux *event.TypeMux, am *accounts.Manager) *PublicBlockChainAPI {
return &PublicBlockChainAPI{config: config, bc: bc, miner: m, chainDb: chainDb, eventMux: eventMux, am: am}
}
// BlockNumber returns the block number of the chain head.
func (s *PublicBlockChainAPI) BlockNumber() *big.Int {
return s.bc.CurrentHeader().Number
}
// GetBalance returns the amount of wei for the given address in the state of the
// given block number. The rpc.LatestBlockNumber and rpc.PendingBlockNumber meta
// block numbers are also allowed.
func (s *PublicBlockChainAPI) GetBalance(address common.Address, blockNr rpc.BlockNumber) (*big.Int, error) {
state, _, err := stateAndBlockByNumber(s.miner, s.bc, blockNr, s.chainDb)
if state == nil || err != nil {
return nil, err
}
return state.GetBalance(address), nil
}
// GetBlockByNumber returns the requested block. When blockNr is -1 the chain head is returned. When fullTx is true all
// transactions in the block are returned in full detail, otherwise only the transaction hash is returned.
func (s *PublicBlockChainAPI) GetBlockByNumber(blockNr rpc.BlockNumber, fullTx bool) (map[string]interface{}, error) {
if block := blockByNumber(s.miner, s.bc, blockNr); block != nil {
response, err := s.rpcOutputBlock(block, true, fullTx)
if err == nil && blockNr == rpc.PendingBlockNumber {
// Pending blocks need to nil out a few fields
for _, field := range []string{"hash", "nonce", "logsBloom", "miner"} {
response[field] = nil
}
}
return response, err
}
return nil, nil
}
// GetBlockByHash returns the requested block. When fullTx is true all transactions in the block are returned in full
// detail, otherwise only the transaction hash is returned.
func (s *PublicBlockChainAPI) GetBlockByHash(blockHash common.Hash, fullTx bool) (map[string]interface{}, error) {
if block := s.bc.GetBlock(blockHash); block != nil {
return s.rpcOutputBlock(block, true, fullTx)
}
return nil, nil
}
// GetUncleByBlockNumberAndIndex returns the uncle block for the given block hash and index. When fullTx is true
// all transactions in the block are returned in full detail, otherwise only the transaction hash is returned.
func (s *PublicBlockChainAPI) GetUncleByBlockNumberAndIndex(blockNr rpc.BlockNumber, index rpc.HexNumber) (map[string]interface{}, error) {
if block := blockByNumber(s.miner, s.bc, blockNr); block != nil {
uncles := block.Uncles()
if index.Int() < 0 || index.Int() >= len(uncles) {
glog.V(logger.Debug).Infof("uncle block on index %d not found for block #%d", index.Int(), blockNr)
return nil, nil
}
block = types.NewBlockWithHeader(uncles[index.Int()])
return s.rpcOutputBlock(block, false, false)
}
return nil, nil
}
// GetUncleByBlockHashAndIndex returns the uncle block for the given block hash and index. When fullTx is true
// all transactions in the block are returned in full detail, otherwise only the transaction hash is returned.
func (s *PublicBlockChainAPI) GetUncleByBlockHashAndIndex(blockHash common.Hash, index rpc.HexNumber) (map[string]interface{}, error) {
if block := s.bc.GetBlock(blockHash); block != nil {
uncles := block.Uncles()
if index.Int() < 0 || index.Int() >= len(uncles) {
glog.V(logger.Debug).Infof("uncle block on index %d not found for block %s", index.Int(), blockHash.Hex())
return nil, nil
}
block = types.NewBlockWithHeader(uncles[index.Int()])
return s.rpcOutputBlock(block, false, false)
}
return nil, nil
}
// GetUncleCountByBlockNumber returns number of uncles in the block for the given block number
func (s *PublicBlockChainAPI) GetUncleCountByBlockNumber(blockNr rpc.BlockNumber) *rpc.HexNumber {
if block := blockByNumber(s.miner, s.bc, blockNr); block != nil {
return rpc.NewHexNumber(len(block.Uncles()))
}
return nil
}
// GetUncleCountByBlockHash returns number of uncles in the block for the given block hash
func (s *PublicBlockChainAPI) GetUncleCountByBlockHash(blockHash common.Hash) *rpc.HexNumber {
if block := s.bc.GetBlock(blockHash); block != nil {
return rpc.NewHexNumber(len(block.Uncles()))
}
return nil
}
// NewBlocksArgs allows the user to specify if the returned block should include transactions and in which format.
type NewBlocksArgs struct {
IncludeTransactions bool `json:"includeTransactions"`
TransactionDetails bool `json:"transactionDetails"`
}
// NewBlocks triggers a new block event each time a block is appended to the chain. It accepts an argument which allows
// the caller to specify whether the output should contain transactions and in what format.
func (s *PublicBlockChainAPI) NewBlocks(args NewBlocksArgs) (rpc.Subscription, error) {
sub := s.eventMux.Subscribe(core.ChainEvent{})
output := func(rawBlock interface{}) interface{} {
if event, ok := rawBlock.(core.ChainEvent); ok {
notification, err := s.rpcOutputBlock(event.Block, args.IncludeTransactions, args.TransactionDetails)
if err == nil {
return notification
}
}
return rawBlock
}
return rpc.NewSubscriptionWithOutputFormat(sub, output), nil
}
// GetCode returns the code stored at the given address in the state for the given block number.
func (s *PublicBlockChainAPI) GetCode(address common.Address, blockNr rpc.BlockNumber) (string, error) {
state, _, err := stateAndBlockByNumber(s.miner, s.bc, blockNr, s.chainDb)
if state == nil || err != nil {
return "", err
}
res := state.GetCode(address)
if len(res) == 0 { // backwards compatibility
return "0x", nil
}
return common.ToHex(res), nil
}
// GetStorageAt returns the storage from the state at the given address, key and
// block number. The rpc.LatestBlockNumber and rpc.PendingBlockNumber meta block
// numbers are also allowed.
func (s *PublicBlockChainAPI) GetStorageAt(address common.Address, key string, blockNr rpc.BlockNumber) (string, error) {
state, _, err := stateAndBlockByNumber(s.miner, s.bc, blockNr, s.chainDb)
if state == nil || err != nil {
return "0x", err
}
return state.GetState(address, common.HexToHash(key)).Hex(), nil
}
// callmsg is the message type used for call transactions.
type callmsg struct {
from *state.StateObject
to *common.Address
gas, gasPrice *big.Int
value *big.Int
data []byte
}
// accessor boilerplate to implement core.Message
func (m callmsg) From() (common.Address, error) { return m.from.Address(), nil }
func (m callmsg) FromFrontier() (common.Address, error) { return m.from.Address(), nil }
func (m callmsg) Nonce() uint64 { return m.from.Nonce() }
func (m callmsg) To() *common.Address { return m.to }
func (m callmsg) GasPrice() *big.Int { return m.gasPrice }
func (m callmsg) Gas() *big.Int { return m.gas }
func (m callmsg) Value() *big.Int { return m.value }
func (m callmsg) Data() []byte { return m.data }
type CallArgs struct {
From common.Address `json:"from"`
To *common.Address `json:"to"`
Gas rpc.HexNumber `json:"gas"`
GasPrice rpc.HexNumber `json:"gasPrice"`
Value rpc.HexNumber `json:"value"`
Data string `json:"data"`
}
func (s *PublicBlockChainAPI) doCall(args CallArgs, blockNr rpc.BlockNumber) (string, *big.Int, error) {
// Fetch the state associated with the block number
stateDb, block, err := stateAndBlockByNumber(s.miner, s.bc, blockNr, s.chainDb)
if stateDb == nil || err != nil {
return "0x", nil, err
}
stateDb = stateDb.Copy()
// Retrieve the account state object to interact with
var from *state.StateObject
if args.From == (common.Address{}) {
accounts, err := s.am.Accounts()
if err != nil || len(accounts) == 0 {
from = stateDb.GetOrNewStateObject(common.Address{})
} else {
from = stateDb.GetOrNewStateObject(accounts[0].Address)
}
} else {
from = stateDb.GetOrNewStateObject(args.From)
}
from.SetBalance(common.MaxBig)
// Assemble the CALL invocation
msg := callmsg{
from: from,
to: args.To,
gas: args.Gas.BigInt(),
gasPrice: args.GasPrice.BigInt(),
value: args.Value.BigInt(),
data: common.FromHex(args.Data),
}
if msg.gas.Cmp(common.Big0) == 0 {
msg.gas = big.NewInt(50000000)
}
if msg.gasPrice.Cmp(common.Big0) == 0 {
msg.gasPrice = new(big.Int).Mul(big.NewInt(50), common.Shannon)
}
// Execute the call and return
vmenv := core.NewEnv(stateDb, s.config, s.bc, msg, block.Header(), s.config.VmConfig)
gp := new(core.GasPool).AddGas(common.MaxBig)
res, requiredGas, _, err := core.NewStateTransition(vmenv, msg, gp).TransitionDb()
if len(res) == 0 { // backwards compatibility
return "0x", requiredGas, err
}
return common.ToHex(res), requiredGas, err
}
// Call executes the given transaction on the state for the given block number.
// It doesn't make and changes in the state/blockchain and is useful to execute and retrieve values.
func (s *PublicBlockChainAPI) Call(args CallArgs, blockNr rpc.BlockNumber) (string, error) {
result, _, err := s.doCall(args, blockNr)
return result, err
}
// EstimateGas returns an estimate of the amount of gas needed to execute the given transaction.
func (s *PublicBlockChainAPI) EstimateGas(args CallArgs) (*rpc.HexNumber, error) {
_, gas, err := s.doCall(args, rpc.PendingBlockNumber)
return rpc.NewHexNumber(gas), err
}
// rpcOutputBlock converts the given block to the RPC output which depends on fullTx. If inclTx is true transactions are
// returned. When fullTx is true the returned block contains full transaction details, otherwise it will only contain
// transaction hashes.
func (s *PublicBlockChainAPI) rpcOutputBlock(b *types.Block, inclTx bool, fullTx bool) (map[string]interface{}, error) {
fields := map[string]interface{}{
"number": rpc.NewHexNumber(b.Number()),
"hash": b.Hash(),
"parentHash": b.ParentHash(),
"nonce": b.Header().Nonce,
"sha3Uncles": b.UncleHash(),
"logsBloom": b.Bloom(),
"stateRoot": b.Root(),
"miner": b.Coinbase(),
"difficulty": rpc.NewHexNumber(b.Difficulty()),
"totalDifficulty": rpc.NewHexNumber(s.bc.GetTd(b.Hash())),
"extraData": fmt.Sprintf("0x%x", b.Extra()),
"size": rpc.NewHexNumber(b.Size().Int64()),
"gasLimit": rpc.NewHexNumber(b.GasLimit()),
"gasUsed": rpc.NewHexNumber(b.GasUsed()),
"timestamp": rpc.NewHexNumber(b.Time()),
"transactionsRoot": b.TxHash(),
"receiptRoot": b.ReceiptHash(),
}
if inclTx {
formatTx := func(tx *types.Transaction) (interface{}, error) {
return tx.Hash(), nil
}
if fullTx {
formatTx = func(tx *types.Transaction) (interface{}, error) {
return newRPCTransaction(b, tx.Hash())
}
}
txs := b.Transactions()
transactions := make([]interface{}, len(txs))
var err error
for i, tx := range b.Transactions() {
if transactions[i], err = formatTx(tx); err != nil {
return nil, err
}
}
fields["transactions"] = transactions
}
uncles := b.Uncles()
uncleHashes := make([]common.Hash, len(uncles))
for i, uncle := range uncles {
uncleHashes[i] = uncle.Hash()
}
fields["uncles"] = uncleHashes
return fields, nil
}
// RPCTransaction represents a transaction that will serialize to the RPC representation of a transaction
type RPCTransaction struct {
BlockHash common.Hash `json:"blockHash"`
BlockNumber *rpc.HexNumber `json:"blockNumber"`
From common.Address `json:"from"`
Gas *rpc.HexNumber `json:"gas"`
GasPrice *rpc.HexNumber `json:"gasPrice"`
Hash common.Hash `json:"hash"`
Input string `json:"input"`
Nonce *rpc.HexNumber `json:"nonce"`
To *common.Address `json:"to"`
TransactionIndex *rpc.HexNumber `json:"transactionIndex"`
Value *rpc.HexNumber `json:"value"`
}
// newRPCPendingTransaction returns a pending transaction that will serialize to the RPC representation
func newRPCPendingTransaction(tx *types.Transaction) *RPCTransaction {
from, _ := tx.FromFrontier()
return &RPCTransaction{
From: from,
Gas: rpc.NewHexNumber(tx.Gas()),
GasPrice: rpc.NewHexNumber(tx.GasPrice()),
Hash: tx.Hash(),
Input: fmt.Sprintf("0x%x", tx.Data()),
Nonce: rpc.NewHexNumber(tx.Nonce()),
To: tx.To(),
Value: rpc.NewHexNumber(tx.Value()),
}
}
// newRPCTransaction returns a transaction that will serialize to the RPC representation.
func newRPCTransactionFromBlockIndex(b *types.Block, txIndex int) (*RPCTransaction, error) {
if txIndex >= 0 && txIndex < len(b.Transactions()) {
tx := b.Transactions()[txIndex]
from, err := tx.FromFrontier()
if err != nil {
return nil, err
}
return &RPCTransaction{
BlockHash: b.Hash(),
BlockNumber: rpc.NewHexNumber(b.Number()),
From: from,
Gas: rpc.NewHexNumber(tx.Gas()),
GasPrice: rpc.NewHexNumber(tx.GasPrice()),
Hash: tx.Hash(),
Input: fmt.Sprintf("0x%x", tx.Data()),
Nonce: rpc.NewHexNumber(tx.Nonce()),
To: tx.To(),
TransactionIndex: rpc.NewHexNumber(txIndex),
Value: rpc.NewHexNumber(tx.Value()),
}, nil
}
return nil, nil
}
// newRPCTransaction returns a transaction that will serialize to the RPC representation.
func newRPCTransaction(b *types.Block, txHash common.Hash) (*RPCTransaction, error) {
for idx, tx := range b.Transactions() {
if tx.Hash() == txHash {
return newRPCTransactionFromBlockIndex(b, idx)
}
}
return nil, nil
}
// PublicTransactionPoolAPI exposes methods for the RPC interface
type PublicTransactionPoolAPI struct {
eventMux *event.TypeMux
chainDb ethdb.Database
gpo *GasPriceOracle
bc *core.BlockChain
miner *miner.Miner
am *accounts.Manager
txPool *core.TxPool
txMu sync.Mutex
}
// NewPublicTransactionPoolAPI creates a new RPC service with methods specific for the transaction pool.
func NewPublicTransactionPoolAPI(e *Ethereum) *PublicTransactionPoolAPI {
return &PublicTransactionPoolAPI{
eventMux: e.EventMux(),
gpo: NewGasPriceOracle(e),
chainDb: e.ChainDb(),
bc: e.BlockChain(),
am: e.AccountManager(),
txPool: e.TxPool(),
miner: e.Miner(),
}
}
func getTransaction(chainDb ethdb.Database, txPool *core.TxPool, txHash common.Hash) (*types.Transaction, bool, error) {
txData, err := chainDb.Get(txHash.Bytes())
isPending := false
tx := new(types.Transaction)
if err == nil && len(txData) > 0 {
if err := rlp.DecodeBytes(txData, tx); err != nil {
return nil, isPending, err
}
} else {
// pending transaction?
tx = txPool.GetTransaction(txHash)
isPending = true
}
return tx, isPending, nil
}
// GetBlockTransactionCountByNumber returns the number of transactions in the block with the given block number.
func (s *PublicTransactionPoolAPI) GetBlockTransactionCountByNumber(blockNr rpc.BlockNumber) *rpc.HexNumber {
if block := blockByNumber(s.miner, s.bc, blockNr); block != nil {
return rpc.NewHexNumber(len(block.Transactions()))
}
return nil
}
// GetBlockTransactionCountByHash returns the number of transactions in the block with the given hash.
func (s *PublicTransactionPoolAPI) GetBlockTransactionCountByHash(blockHash common.Hash) *rpc.HexNumber {
if block := s.bc.GetBlock(blockHash); block != nil {
return rpc.NewHexNumber(len(block.Transactions()))
}
return nil
}
// GetTransactionByBlockNumberAndIndex returns the transaction for the given block number and index.
func (s *PublicTransactionPoolAPI) GetTransactionByBlockNumberAndIndex(blockNr rpc.BlockNumber, index rpc.HexNumber) (*RPCTransaction, error) {
if block := blockByNumber(s.miner, s.bc, blockNr); block != nil {
return newRPCTransactionFromBlockIndex(block, index.Int())
}
return nil, nil
}
// GetTransactionByBlockHashAndIndex returns the transaction for the given block hash and index.
func (s *PublicTransactionPoolAPI) GetTransactionByBlockHashAndIndex(blockHash common.Hash, index rpc.HexNumber) (*RPCTransaction, error) {
if block := s.bc.GetBlock(blockHash); block != nil {
return newRPCTransactionFromBlockIndex(block, index.Int())
}
return nil, nil
}
// GetTransactionCount returns the number of transactions the given address has sent for the given block number
func (s *PublicTransactionPoolAPI) GetTransactionCount(address common.Address, blockNr rpc.BlockNumber) (*rpc.HexNumber, error) {
state, _, err := stateAndBlockByNumber(s.miner, s.bc, blockNr, s.chainDb)
if state == nil || err != nil {
return nil, err
}
return rpc.NewHexNumber(state.GetNonce(address)), nil
}
// getTransactionBlockData fetches the meta data for the given transaction from the chain database. This is useful to
// retrieve block information for a hash. It returns the block hash, block index and transaction index.
func getTransactionBlockData(chainDb ethdb.Database, txHash common.Hash) (common.Hash, uint64, uint64, error) {
var txBlock struct {
BlockHash common.Hash
BlockIndex uint64
Index uint64
}
blockData, err := chainDb.Get(append(txHash.Bytes(), 0x0001))
if err != nil {
return common.Hash{}, uint64(0), uint64(0), err
}
reader := bytes.NewReader(blockData)
if err = rlp.Decode(reader, &txBlock); err != nil {
return common.Hash{}, uint64(0), uint64(0), err
}
return txBlock.BlockHash, txBlock.BlockIndex, txBlock.Index, nil
}
// GetTransactionByHash returns the transaction for the given hash
func (s *PublicTransactionPoolAPI) GetTransactionByHash(txHash common.Hash) (*RPCTransaction, error) {
var tx *types.Transaction
var isPending bool
var err error
if tx, isPending, err = getTransaction(s.chainDb, s.txPool, txHash); err != nil {
glog.V(logger.Debug).Infof("%v\n", err)
return nil, nil
} else if tx == nil {
return nil, nil
}
if isPending {
return newRPCPendingTransaction(tx), nil
}
blockHash, _, _, err := getTransactionBlockData(s.chainDb, txHash)
if err != nil {
glog.V(logger.Debug).Infof("%v\n", err)
return nil, nil
}
if block := s.bc.GetBlock(blockHash); block != nil {
return newRPCTransaction(block, txHash)
}
return nil, nil
}
// GetTransactionReceipt returns the transaction receipt for the given transaction hash.
func (s *PublicTransactionPoolAPI) GetTransactionReceipt(txHash common.Hash) (map[string]interface{}, error) {
receipt := core.GetReceipt(s.chainDb, txHash)
if receipt == nil {
glog.V(logger.Debug).Infof("receipt not found for transaction %s", txHash.Hex())
return nil, nil
}
tx, _, err := getTransaction(s.chainDb, s.txPool, txHash)
if err != nil {
glog.V(logger.Debug).Infof("%v\n", err)
return nil, nil
}
txBlock, blockIndex, index, err := getTransactionBlockData(s.chainDb, txHash)
if err != nil {
glog.V(logger.Debug).Infof("%v\n", err)
return nil, nil
}
from, err := tx.FromFrontier()
if err != nil {
glog.V(logger.Debug).Infof("%v\n", err)
return nil, nil
}
fields := map[string]interface{}{
"root": common.Bytes2Hex(receipt.PostState),
"blockHash": txBlock,
"blockNumber": rpc.NewHexNumber(blockIndex),
"transactionHash": txHash,
"transactionIndex": rpc.NewHexNumber(index),
"from": from,
"to": tx.To(),
"gasUsed": rpc.NewHexNumber(receipt.GasUsed),
"cumulativeGasUsed": rpc.NewHexNumber(receipt.CumulativeGasUsed),
"contractAddress": nil,
"logs": receipt.Logs,
}
if receipt.Logs == nil {
fields["logs"] = []vm.Logs{}
}
// If the ContractAddress is 20 0x0 bytes, assume it is not a contract creation
if bytes.Compare(receipt.ContractAddress.Bytes(), bytes.Repeat([]byte{0}, 20)) != 0 {
fields["contractAddress"] = receipt.ContractAddress
}
return fields, nil
}
// sign is a helper function that signs a transaction with the private key of the given address.
func (s *PublicTransactionPoolAPI) sign(address common.Address, tx *types.Transaction) (*types.Transaction, error) {
acc := accounts.Account{address}
signature, err := s.am.Sign(acc, tx.SigHash().Bytes())
if err != nil {
return nil, err
}
return tx.WithSignature(signature)
}
type SendTxArgs struct {
From common.Address `json:"from"`
To *common.Address `json:"to"`
Gas *rpc.HexNumber `json:"gas"`
GasPrice *rpc.HexNumber `json:"gasPrice"`
Value *rpc.HexNumber `json:"value"`
Data string `json:"data"`
Nonce *rpc.HexNumber `json:"nonce"`
}
// SendTransaction will create a transaction for the given transaction argument, sign it and submit it to the
// transaction pool.
func (s *PublicTransactionPoolAPI) SendTransaction(args SendTxArgs) (common.Hash, error) {
if args.Gas == nil {
args.Gas = rpc.NewHexNumber(defaultGas)
}
if args.GasPrice == nil {
args.GasPrice = rpc.NewHexNumber(s.gpo.SuggestPrice())
}
if args.Value == nil {
args.Value = rpc.NewHexNumber(0)
}
s.txMu.Lock()
defer s.txMu.Unlock()
if args.Nonce == nil {
args.Nonce = rpc.NewHexNumber(s.txPool.State().GetNonce(args.From))
}
var tx *types.Transaction
contractCreation := (args.To == nil)
if contractCreation {
tx = types.NewContractCreation(args.Nonce.Uint64(), args.Value.BigInt(), args.Gas.BigInt(), args.GasPrice.BigInt(), common.FromHex(args.Data))
} else {
tx = types.NewTransaction(args.Nonce.Uint64(), *args.To, args.Value.BigInt(), args.Gas.BigInt(), args.GasPrice.BigInt(), common.FromHex(args.Data))
}
signedTx, err := s.sign(args.From, tx)
if err != nil {
return common.Hash{}, err
}
s.txPool.SetLocal(signedTx)
if err := s.txPool.Add(signedTx); err != nil {
return common.Hash{}, err
}
if contractCreation {
addr := crypto.CreateAddress(args.From, args.Nonce.Uint64())
glog.V(logger.Info).Infof("Tx(%s) created: %s\n", signedTx.Hash().Hex(), addr.Hex())
} else {
glog.V(logger.Info).Infof("Tx(%s) to: %s\n", signedTx.Hash().Hex(), tx.To().Hex())
}
return signedTx.Hash(), nil
}
// SendRawTransaction will add the signed transaction to the transaction pool.
// The sender is responsible for signing the transaction and using the correct nonce.
func (s *PublicTransactionPoolAPI) SendRawTransaction(encodedTx string) (string, error) {
tx := new(types.Transaction)
if err := rlp.DecodeBytes(common.FromHex(encodedTx), tx); err != nil {
return "", err
}
s.txPool.SetLocal(tx)
if err := s.txPool.Add(tx); err != nil {
return "", err
}
if tx.To() == nil {
from, err := tx.FromFrontier()
if err != nil {
return "", err
}
addr := crypto.CreateAddress(from, tx.Nonce())
glog.V(logger.Info).Infof("Tx(%x) created: %x\n", tx.Hash(), addr)
} else {
glog.V(logger.Info).Infof("Tx(%x) to: %x\n", tx.Hash(), tx.To())
}
return tx.Hash().Hex(), nil
}
// Sign will sign the given data string with the given address. The account corresponding with the address needs to
// be unlocked.
func (s *PublicTransactionPoolAPI) Sign(address common.Address, data string) (string, error) {
signature, error := s.am.Sign(accounts.Account{Address: address}, common.HexToHash(data).Bytes())
return common.ToHex(signature), error
}
type SignTransactionArgs struct {
From common.Address
To *common.Address
Nonce *rpc.HexNumber
Value *rpc.HexNumber
Gas *rpc.HexNumber
GasPrice *rpc.HexNumber
Data string
BlockNumber int64
}
// Tx is a helper object for argument and return values
type Tx struct {
tx *types.Transaction
To *common.Address `json:"to"`
From common.Address `json:"from"`
Nonce *rpc.HexNumber `json:"nonce"`
Value *rpc.HexNumber `json:"value"`
Data string `json:"data"`
GasLimit *rpc.HexNumber `json:"gas"`
GasPrice *rpc.HexNumber `json:"gasPrice"`
Hash common.Hash `json:"hash"`
}
func (tx *Tx) UnmarshalJSON(b []byte) (err error) {
req := struct {
To *common.Address `json:"to"`
From common.Address `json:"from"`
Nonce *rpc.HexNumber `json:"nonce"`
Value *rpc.HexNumber `json:"value"`
Data string `json:"data"`
GasLimit *rpc.HexNumber `json:"gas"`
GasPrice *rpc.HexNumber `json:"gasPrice"`
Hash common.Hash `json:"hash"`
}{}
if err := json.Unmarshal(b, &req); err != nil {
return err
}
tx.To = req.To
tx.From = req.From
tx.Nonce = req.Nonce
tx.Value = req.Value
tx.Data = req.Data
tx.GasLimit = req.GasLimit
tx.GasPrice = req.GasPrice
tx.Hash = req.Hash
data := common.Hex2Bytes(tx.Data)
if tx.Nonce == nil {
return fmt.Errorf("need nonce")
}
if tx.Value == nil {
tx.Value = rpc.NewHexNumber(0)
}
if tx.GasLimit == nil {
tx.GasLimit = rpc.NewHexNumber(0)
}
if tx.GasPrice == nil {
tx.GasPrice = rpc.NewHexNumber(int64(50000000000))
}
contractCreation := (req.To == nil)
if contractCreation {
tx.tx = types.NewContractCreation(tx.Nonce.Uint64(), tx.Value.BigInt(), tx.GasLimit.BigInt(), tx.GasPrice.BigInt(), data)
} else {
tx.tx = types.NewTransaction(tx.Nonce.Uint64(), *tx.To, tx.Value.BigInt(), tx.GasLimit.BigInt(), tx.GasPrice.BigInt(), data)
}
return nil
}
type SignTransactionResult struct {
Raw string `json:"raw"`
Tx *Tx `json:"tx"`
}
func newTx(t *types.Transaction) *Tx {
from, _ := t.FromFrontier()
return &Tx{
tx: t,
To: t.To(),
From: from,
Value: rpc.NewHexNumber(t.Value()),
Nonce: rpc.NewHexNumber(t.Nonce()),
Data: "0x" + common.Bytes2Hex(t.Data()),
GasLimit: rpc.NewHexNumber(t.Gas()),
GasPrice: rpc.NewHexNumber(t.GasPrice()),
Hash: t.Hash(),
}
}
// SignTransaction will sign the given transaction with the from account.
// The node needs to have the private key of the account corresponding with
// the given from address and it needs to be unlocked.
func (s *PublicTransactionPoolAPI) SignTransaction(args *SignTransactionArgs) (*SignTransactionResult, error) {
if args.Gas == nil {
args.Gas = rpc.NewHexNumber(defaultGas)
}
if args.GasPrice == nil {
args.GasPrice = rpc.NewHexNumber(s.gpo.SuggestPrice())
}
if args.Value == nil {
args.Value = rpc.NewHexNumber(0)
}
s.txMu.Lock()
defer s.txMu.Unlock()
if args.Nonce == nil {
args.Nonce = rpc.NewHexNumber(s.txPool.State().GetNonce(args.From))
}
var tx *types.Transaction
contractCreation := (args.To == nil)
if contractCreation {
tx = types.NewContractCreation(args.Nonce.Uint64(), args.Value.BigInt(), args.Gas.BigInt(), args.GasPrice.BigInt(), common.FromHex(args.Data))
} else {
tx = types.NewTransaction(args.Nonce.Uint64(), *args.To, args.Value.BigInt(), args.Gas.BigInt(), args.GasPrice.BigInt(), common.FromHex(args.Data))
}
signedTx, err := s.sign(args.From, tx)
if err != nil {
return nil, err
}
data, err := rlp.EncodeToBytes(signedTx)
if err != nil {
return nil, err
}
return &SignTransactionResult{"0x" + common.Bytes2Hex(data), newTx(tx)}, nil
}
// PendingTransactions returns the transactions that are in the transaction pool and have a from address that is one of
// the accounts this node manages.
func (s *PublicTransactionPoolAPI) PendingTransactions() ([]*RPCTransaction, error) {
accounts, err := s.am.Accounts()
if err != nil {
return nil, err
}
accountSet := set.New()
for _, account := range accounts {
accountSet.Add(account.Address)
}
pending := s.txPool.GetTransactions()
transactions := make([]*RPCTransaction, 0)
for _, tx := range pending {
if from, _ := tx.FromFrontier(); accountSet.Has(from) {
transactions = append(transactions, newRPCPendingTransaction(tx))
}
}
return transactions, nil
}
// NewPendingTransaction creates a subscription that is triggered each time a transaction enters the transaction pool
// and is send from one of the transactions this nodes manages.
func (s *PublicTransactionPoolAPI) NewPendingTransactions() (rpc.Subscription, error) {
sub := s.eventMux.Subscribe(core.TxPreEvent{})
accounts, err := s.am.Accounts()
if err != nil {
return rpc.Subscription{}, err
}
accountSet := set.New()
for _, account := range accounts {
accountSet.Add(account.Address)
}
accountSetLastUpdates := time.Now()
output := func(transaction interface{}) interface{} {
if time.Since(accountSetLastUpdates) > (time.Duration(2) * time.Second) {
if accounts, err = s.am.Accounts(); err != nil {
accountSet.Clear()
for _, account := range accounts {
accountSet.Add(account.Address)
}
accountSetLastUpdates = time.Now()
}
}
tx := transaction.(core.TxPreEvent)
if from, err := tx.Tx.FromFrontier(); err == nil {
if accountSet.Has(from) {
return tx.Tx.Hash()
}
}
return nil
}
return rpc.NewSubscriptionWithOutputFormat(sub, output), nil
}
// Resend accepts an existing transaction and a new gas price and limit. It will remove the given transaction from the
// pool and reinsert it with the new gas price and limit.
func (s *PublicTransactionPoolAPI) Resend(tx *Tx, gasPrice, gasLimit *rpc.HexNumber) (common.Hash, error) {
pending := s.txPool.GetTransactions()
for _, p := range pending {
if pFrom, err := p.FromFrontier(); err == nil && pFrom == tx.From && p.SigHash() == tx.tx.SigHash() {
if gasPrice == nil {
gasPrice = rpc.NewHexNumber(tx.tx.GasPrice())
}
if gasLimit == nil {
gasLimit = rpc.NewHexNumber(tx.tx.Gas())
}
var newTx *types.Transaction
contractCreation := (tx.tx.To() == nil)
if contractCreation {
newTx = types.NewContractCreation(tx.tx.Nonce(), tx.tx.Value(), gasPrice.BigInt(), gasLimit.BigInt(), tx.tx.Data())
} else {
newTx = types.NewTransaction(tx.tx.Nonce(), *tx.tx.To(), tx.tx.Value(), gasPrice.BigInt(), gasLimit.BigInt(), tx.tx.Data())
}
signedTx, err := s.sign(tx.From, newTx)
if err != nil {
return common.Hash{}, err
}
s.txPool.RemoveTx(tx.Hash)
if err = s.txPool.Add(signedTx); err != nil {
return common.Hash{}, err
}
return signedTx.Hash(), nil
}
}
return common.Hash{}, fmt.Errorf("Transaction %#x not found", tx.Hash)
}
// PrivateAdminAPI is the collection of Etheruem APIs exposed over the private
// admin endpoint.
type PrivateAdminAPI struct {
eth *Ethereum
}
// NewPrivateAdminAPI creates a new API definition for the private admin methods
// of the Ethereum service.
func NewPrivateAdminAPI(eth *Ethereum) *PrivateAdminAPI {
return &PrivateAdminAPI{eth: eth}
}
// SetSolc sets the Solidity compiler path to be used by the node.
func (api *PrivateAdminAPI) SetSolc(path string) (string, error) {
solc, err := api.eth.SetSolc(path)
if err != nil {
return "", err
}
return solc.Info(), nil
}
// ExportChain exports the current blockchain into a local file.
func (api *PrivateAdminAPI) ExportChain(file string) (bool, error) {
// Make sure we can create the file to export into
out, err := os.OpenFile(file, os.O_CREATE|os.O_WRONLY|os.O_TRUNC, os.ModePerm)
if err != nil {
return false, err
}
defer out.Close()
// Export the blockchain
if err := api.eth.BlockChain().Export(out); err != nil {
return false, err
}
return true, nil
}
func hasAllBlocks(chain *core.BlockChain, bs []*types.Block) bool {
for _, b := range bs {
if !chain.HasBlock(b.Hash()) {
return false
}
}
return true
}
// ImportChain imports a blockchain from a local file.
func (api *PrivateAdminAPI) ImportChain(file string) (bool, error) {
// Make sure the can access the file to import
in, err := os.Open(file)
if err != nil {
return false, err
}
defer in.Close()
// Run actual the import in pre-configured batches
stream := rlp.NewStream(in, 0)
blocks, index := make([]*types.Block, 0, 2500), 0
for batch := 0; ; batch++ {
// Load a batch of blocks from the input file
for len(blocks) < cap(blocks) {
block := new(types.Block)
if err := stream.Decode(block); err == io.EOF {
break
} else if err != nil {
return false, fmt.Errorf("block %d: failed to parse: %v", index, err)
}
blocks = append(blocks, block)
index++
}
if len(blocks) == 0 {
break
}
if hasAllBlocks(api.eth.BlockChain(), blocks) {
blocks = blocks[:0]
continue
}
// Import the batch and reset the buffer
if _, err := api.eth.BlockChain().InsertChain(blocks); err != nil {
return false, fmt.Errorf("batch %d: failed to insert: %v", batch, err)
}
blocks = blocks[:0]
}
return true, nil
}
// PublicDebugAPI is the collection of Etheruem APIs exposed over the public
// debugging endpoint.
type PublicDebugAPI struct {
eth *Ethereum
}
// NewPublicDebugAPI creates a new API definition for the public debug methods
// of the Ethereum service.
func NewPublicDebugAPI(eth *Ethereum) *PublicDebugAPI {
return &PublicDebugAPI{eth: eth}
}
// DumpBlock retrieves the entire state of the database at a given block.
func (api *PublicDebugAPI) DumpBlock(number uint64) (state.World, error) {
block := api.eth.BlockChain().GetBlockByNumber(number)
if block == nil {
return state.World{}, fmt.Errorf("block #%d not found", number)
}
stateDb, err := state.New(block.Root(), api.eth.ChainDb())
if err != nil {
return state.World{}, err
}
return stateDb.RawDump(), nil
}
// GetBlockRlp retrieves the RLP encoded for of a single block.
func (api *PublicDebugAPI) GetBlockRlp(number uint64) (string, error) {
block := api.eth.BlockChain().GetBlockByNumber(number)
if block == nil {
return "", fmt.Errorf("block #%d not found", number)
}
encoded, err := rlp.EncodeToBytes(block)
if err != nil {
return "", err
}
return fmt.Sprintf("%x", encoded), nil
}
// PrintBlock retrieves a block and returns its pretty printed form.
func (api *PublicDebugAPI) PrintBlock(number uint64) (string, error) {
block := api.eth.BlockChain().GetBlockByNumber(number)
if block == nil {
return "", fmt.Errorf("block #%d not found", number)
}
return fmt.Sprintf("%s", block), nil
}
// SeedHash retrieves the seed hash of a block.
func (api *PublicDebugAPI) SeedHash(number uint64) (string, error) {
block := api.eth.BlockChain().GetBlockByNumber(number)
if block == nil {
return "", fmt.Errorf("block #%d not found", number)
}
hash, err := ethash.GetSeedHash(number)
if err != nil {
return "", err
}
return fmt.Sprintf("0x%x", hash), nil
}
// PrivateDebugAPI is the collection of Etheruem APIs exposed over the private
// debugging endpoint.
type PrivateDebugAPI struct {
config *core.ChainConfig
eth *Ethereum
}
// NewPrivateDebugAPI creates a new API definition for the private debug methods
// of the Ethereum service.
func NewPrivateDebugAPI(config *core.ChainConfig, eth *Ethereum) *PrivateDebugAPI {
return &PrivateDebugAPI{config: config, eth: eth}
}
// BlockTraceResults is the returned value when replaying a block to check for
// consensus results and full VM trace logs for all included transactions.
type BlockTraceResult struct {
Validated bool `json:"validated"`
StructLogs []structLogRes `json:"structLogs"`
Error string `json:"error"`
}
// TraceBlock processes the given block's RLP but does not import the block in to
// the chain.
func (api *PrivateDebugAPI) TraceBlock(blockRlp []byte, config vm.Config) BlockTraceResult {
var block types.Block
err := rlp.Decode(bytes.NewReader(blockRlp), &block)
if err != nil {
return BlockTraceResult{Error: fmt.Sprintf("could not decode block: %v", err)}
}
validated, logs, err := api.traceBlock(&block, config)
return BlockTraceResult{
Validated: validated,
StructLogs: formatLogs(logs),
Error: formatError(err),
}
}
// TraceBlockFromFile loads the block's RLP from the given file name and attempts to
// process it but does not import the block in to the chain.
func (api *PrivateDebugAPI) TraceBlockFromFile(file string, config vm.Config) BlockTraceResult {
blockRlp, err := ioutil.ReadFile(file)
if err != nil {
return BlockTraceResult{Error: fmt.Sprintf("could not read file: %v", err)}
}
return api.TraceBlock(blockRlp, config)
}
// TraceProcessBlock processes the block by canonical block number.
func (api *PrivateDebugAPI) TraceBlockByNumber(number uint64, config vm.Config) BlockTraceResult {
// Fetch the block that we aim to reprocess
block := api.eth.BlockChain().GetBlockByNumber(number)
if block == nil {
return BlockTraceResult{Error: fmt.Sprintf("block #%d not found", number)}
}
validated, logs, err := api.traceBlock(block, config)
return BlockTraceResult{
Validated: validated,
StructLogs: formatLogs(logs),
Error: formatError(err),
}
}
// TraceBlockByHash processes the block by hash.
func (api *PrivateDebugAPI) TraceBlockByHash(hash common.Hash, config vm.Config) BlockTraceResult {
// Fetch the block that we aim to reprocess
block := api.eth.BlockChain().GetBlock(hash)
if block == nil {
return BlockTraceResult{Error: fmt.Sprintf("block #%x not found", hash)}
}
validated, logs, err := api.traceBlock(block, config)
return BlockTraceResult{
Validated: validated,
StructLogs: formatLogs(logs),
Error: formatError(err),
}
}
// TraceCollector collects EVM structered logs.
//
// TraceCollector implements vm.Collector
type TraceCollector struct {
traces []vm.StructLog
}
// AddStructLog adds a structered log.
func (t *TraceCollector) AddStructLog(slog vm.StructLog) {
t.traces = append(t.traces, slog)
}
// traceBlock processes the given block but does not save the state.
func (api *PrivateDebugAPI) traceBlock(block *types.Block, config vm.Config) (bool, []vm.StructLog, error) {
// Validate and reprocess the block
var (
blockchain = api.eth.BlockChain()
validator = blockchain.Validator()
processor = blockchain.Processor()
collector = &TraceCollector{}
)
config.Debug = true // make sure debug is set.
config.Logger.Collector = collector
if err := core.ValidateHeader(api.config, blockchain.AuxValidator(), block.Header(), blockchain.GetHeader(block.ParentHash()), true, false); err != nil {
return false, collector.traces, err
}
statedb, err := state.New(blockchain.GetBlock(block.ParentHash()).Root(), api.eth.ChainDb())
if err != nil {
return false, collector.traces, err
}
receipts, _, usedGas, err := processor.Process(block, statedb, config)
if err != nil {
return false, collector.traces, err
}
if err := validator.ValidateState(block, blockchain.GetBlock(block.ParentHash()), statedb, receipts, usedGas); err != nil {
return false, collector.traces, err
}
return true, collector.traces, nil
}
// SetHead rewinds the head of the blockchain to a previous block.
func (api *PrivateDebugAPI) SetHead(number uint64) {
api.eth.BlockChain().SetHead(number)
}
// ExecutionResult groups all structured logs emitted by the EVM
// while replaying a transaction in debug mode as well as the amount of
// gas used and the return value
type ExecutionResult struct {
Gas *big.Int `json:"gas"`
ReturnValue string `json:"returnValue"`
StructLogs []structLogRes `json:"structLogs"`
}
// structLogRes stores a structured log emitted by the EVM while replaying a
// transaction in debug mode
type structLogRes struct {
Pc uint64 `json:"pc"`
Op string `json:"op"`
Gas *big.Int `json:"gas"`
GasCost *big.Int `json:"gasCost"`
Depth int `json:"depth"`
Error string `json:"error"`
Stack []string `json:"stack"`
Memory []string `json:"memory"`
Storage map[string]string `json:"storage"`
}
// VmLoggerOptions are the options used for debugging transactions and capturing
// specific data.
type VmLoggerOptions struct {
DisableMemory bool // disable memory capture
DisableStack bool // disable stack capture
DisableStorage bool // disable storage capture
FullStorage bool // show full storage (slow)
}
// formatLogs formats EVM returned structured logs for json output
func formatLogs(structLogs []vm.StructLog) []structLogRes {
formattedStructLogs := make([]structLogRes, len(structLogs))
for index, trace := range structLogs {
formattedStructLogs[index] = structLogRes{
Pc: trace.Pc,
Op: trace.Op.String(),
Gas: trace.Gas,
GasCost: trace.GasCost,
Depth: trace.Depth,
Error: formatError(trace.Err),
Stack: make([]string, len(trace.Stack)),
Storage: make(map[string]string),
}
for i, stackValue := range trace.Stack {
formattedStructLogs[index].Stack[i] = fmt.Sprintf("%x", common.LeftPadBytes(stackValue.Bytes(), 32))
}
for i := 0; i+32 <= len(trace.Memory); i += 32 {
formattedStructLogs[index].Memory = append(formattedStructLogs[index].Memory, fmt.Sprintf("%x", trace.Memory[i:i+32]))
}
for i, storageValue := range trace.Storage {
formattedStructLogs[index].Storage[fmt.Sprintf("%x", i)] = fmt.Sprintf("%x", storageValue)
}
}
return formattedStructLogs
}
// formatError formats a Go error into either an empty string or the data content
// of the error itself.
func formatError(err error) string {
if err == nil {
return ""
}
return err.Error()
}
// TraceTransaction returns the structured logs created during the execution of EVM
// and returns them as a JSON object.
func (s *PrivateDebugAPI) TraceTransaction(txHash common.Hash, logger vm.LogConfig) (*ExecutionResult, error) {
// Retrieve the tx from the chain
tx, _, blockIndex, _ := core.GetTransaction(s.eth.ChainDb(), txHash)
if tx == nil {
return nil, fmt.Errorf("Transaction not found")
}
block := s.eth.BlockChain().GetBlockByNumber(blockIndex - 1)
if block == nil {
return nil, fmt.Errorf("Unable to retrieve prior block")
}
// Create the state database
stateDb, err := state.New(block.Root(), s.eth.ChainDb())
if err != nil {
return nil, err
}
txFrom, err := tx.FromFrontier()
if err != nil {
return nil, fmt.Errorf("Unable to create transaction sender")
}
from := stateDb.GetOrNewStateObject(txFrom)
msg := callmsg{
from: from,
to: tx.To(),
gas: tx.Gas(),
gasPrice: tx.GasPrice(),
value: tx.Value(),
data: tx.Data(),
}
vmenv := core.NewEnv(stateDb, s.config, s.eth.BlockChain(), msg, block.Header(), vm.Config{
Debug: true,
Logger: logger,
})
gp := new(core.GasPool).AddGas(block.GasLimit())
ret, gas, err := core.ApplyMessage(vmenv, msg, gp)
if err != nil {
return nil, fmt.Errorf("Error executing transaction %v", err)
}
return &ExecutionResult{
Gas: gas,
ReturnValue: fmt.Sprintf("%x", ret),
StructLogs: formatLogs(vmenv.StructLogs()),
}, nil
}
func (s *PublicBlockChainAPI) TraceCall(args CallArgs, blockNr rpc.BlockNumber) (*ExecutionResult, error) {
// Fetch the state associated with the block number
stateDb, block, err := stateAndBlockByNumber(s.miner, s.bc, blockNr, s.chainDb)
if stateDb == nil || err != nil {
return nil, err
}
stateDb = stateDb.Copy()
// Retrieve the account state object to interact with
var from *state.StateObject
if args.From == (common.Address{}) {
accounts, err := s.am.Accounts()
if err != nil || len(accounts) == 0 {
from = stateDb.GetOrNewStateObject(common.Address{})
} else {
from = stateDb.GetOrNewStateObject(accounts[0].Address)
}
} else {
from = stateDb.GetOrNewStateObject(args.From)
}
from.SetBalance(common.MaxBig)
// Assemble the CALL invocation
msg := callmsg{
from: from,
to: args.To,
gas: args.Gas.BigInt(),
gasPrice: args.GasPrice.BigInt(),
value: args.Value.BigInt(),
data: common.FromHex(args.Data),
}
if msg.gas.Cmp(common.Big0) == 0 {
msg.gas = big.NewInt(50000000)
}
if msg.gasPrice.Cmp(common.Big0) == 0 {
msg.gasPrice = new(big.Int).Mul(big.NewInt(50), common.Shannon)
}
// Execute the call and return
vmenv := core.NewEnv(stateDb, s.config, s.bc, msg, block.Header(), vm.Config{
Debug: true,
})
gp := new(core.GasPool).AddGas(common.MaxBig)
ret, gas, err := core.ApplyMessage(vmenv, msg, gp)
return &ExecutionResult{
Gas: gas,
ReturnValue: fmt.Sprintf("%x", ret),
StructLogs: formatLogs(vmenv.StructLogs()),
}, nil
}
// PublicNetAPI offers network related RPC methods
type PublicNetAPI struct {
net *p2p.Server
networkVersion int
}
// NewPublicNetAPI creates a new net API instance.
func NewPublicNetAPI(net *p2p.Server, networkVersion int) *PublicNetAPI {
return &PublicNetAPI{net, networkVersion}
}
// Listening returns an indication if the node is listening for network connections.
func (s *PublicNetAPI) Listening() bool {
return true // always listening
}
// Peercount returns the number of connected peers
func (s *PublicNetAPI) PeerCount() *rpc.HexNumber {
return rpc.NewHexNumber(s.net.PeerCount())
}
// ProtocolVersion returns the current ethereum protocol version.
func (s *PublicNetAPI) Version() string {
return fmt.Sprintf("%d", s.networkVersion)
}