Fixes #23681 After the fix I get the address 0x6d6d02e83c4ced98204e20126acf27e9d87b8af2 for the tx mentioned in the ticket, which agrees with etherscan.
		
			
				
	
	
		
			610 lines
		
	
	
		
			19 KiB
		
	
	
	
		
			Go
		
	
	
	
	
	
			
		
		
	
	
			610 lines
		
	
	
		
			19 KiB
		
	
	
	
		
			Go
		
	
	
	
	
	
// Copyright 2015 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package eth
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import (
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	"compress/gzip"
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	"context"
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	"errors"
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	"fmt"
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	"io"
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	"math/big"
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	"os"
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	"runtime"
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	"strings"
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	"time"
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	"github.com/ethereum/go-ethereum/common"
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	"github.com/ethereum/go-ethereum/common/hexutil"
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	"github.com/ethereum/go-ethereum/core"
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	"github.com/ethereum/go-ethereum/core/rawdb"
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	"github.com/ethereum/go-ethereum/core/state"
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	"github.com/ethereum/go-ethereum/core/types"
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	"github.com/ethereum/go-ethereum/internal/ethapi"
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	"github.com/ethereum/go-ethereum/log"
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	"github.com/ethereum/go-ethereum/rlp"
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	"github.com/ethereum/go-ethereum/rpc"
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	"github.com/ethereum/go-ethereum/trie"
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)
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// PublicEthereumAPI provides an API to access Ethereum full node-related
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// information.
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type PublicEthereumAPI struct {
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	e *Ethereum
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}
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// NewPublicEthereumAPI creates a new Ethereum protocol API for full nodes.
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func NewPublicEthereumAPI(e *Ethereum) *PublicEthereumAPI {
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	return &PublicEthereumAPI{e}
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}
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// Etherbase is the address that mining rewards will be send to
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func (api *PublicEthereumAPI) Etherbase() (common.Address, error) {
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	return api.e.Etherbase()
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}
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// Coinbase is the address that mining rewards will be send to (alias for Etherbase)
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func (api *PublicEthereumAPI) Coinbase() (common.Address, error) {
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	return api.Etherbase()
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}
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// Hashrate returns the POW hashrate
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func (api *PublicEthereumAPI) Hashrate() hexutil.Uint64 {
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	return hexutil.Uint64(api.e.Miner().Hashrate())
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}
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// PublicMinerAPI provides an API to control the miner.
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// It offers only methods that operate on data that pose no security risk when it is publicly accessible.
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type PublicMinerAPI struct {
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	e *Ethereum
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}
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// NewPublicMinerAPI create a new PublicMinerAPI instance.
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func NewPublicMinerAPI(e *Ethereum) *PublicMinerAPI {
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	return &PublicMinerAPI{e}
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}
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// Mining returns an indication if this node is currently mining.
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func (api *PublicMinerAPI) Mining() bool {
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	return api.e.IsMining()
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}
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// PrivateMinerAPI provides private RPC methods to control the miner.
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// These methods can be abused by external users and must be considered insecure for use by untrusted users.
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type PrivateMinerAPI struct {
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	e *Ethereum
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}
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// NewPrivateMinerAPI create a new RPC service which controls the miner of this node.
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func NewPrivateMinerAPI(e *Ethereum) *PrivateMinerAPI {
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	return &PrivateMinerAPI{e: e}
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}
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// Start starts the miner with the given number of threads. If threads is nil,
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// the number of workers started is equal to the number of logical CPUs that are
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// usable by this process. If mining is already running, this method adjust the
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// number of threads allowed to use and updates the minimum price required by the
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// transaction pool.
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func (api *PrivateMinerAPI) Start(threads *int) error {
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	if threads == nil {
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		return api.e.StartMining(runtime.NumCPU())
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	}
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	return api.e.StartMining(*threads)
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}
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// Stop terminates the miner, both at the consensus engine level as well as at
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// the block creation level.
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func (api *PrivateMinerAPI) Stop() {
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	api.e.StopMining()
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}
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// SetExtra sets the extra data string that is included when this miner mines a block.
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func (api *PrivateMinerAPI) SetExtra(extra string) (bool, error) {
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	if err := api.e.Miner().SetExtra([]byte(extra)); err != nil {
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		return false, err
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	}
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	return true, nil
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}
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// SetGasPrice sets the minimum accepted gas price for the miner.
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func (api *PrivateMinerAPI) SetGasPrice(gasPrice hexutil.Big) bool {
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	api.e.lock.Lock()
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	api.e.gasPrice = (*big.Int)(&gasPrice)
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	api.e.lock.Unlock()
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	api.e.txPool.SetGasPrice((*big.Int)(&gasPrice))
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	return true
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}
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// SetGasLimit sets the gaslimit to target towards during mining.
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func (api *PrivateMinerAPI) SetGasLimit(gasLimit hexutil.Uint64) bool {
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	api.e.Miner().SetGasCeil(uint64(gasLimit))
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	return true
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}
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// SetEtherbase sets the etherbase of the miner
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func (api *PrivateMinerAPI) SetEtherbase(etherbase common.Address) bool {
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	api.e.SetEtherbase(etherbase)
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	return true
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}
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// SetRecommitInterval updates the interval for miner sealing work recommitting.
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func (api *PrivateMinerAPI) SetRecommitInterval(interval int) {
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	api.e.Miner().SetRecommitInterval(time.Duration(interval) * time.Millisecond)
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}
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// PrivateAdminAPI is the collection of Ethereum full node-related APIs
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// exposed over the private admin endpoint.
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type PrivateAdminAPI struct {
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	eth *Ethereum
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}
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// NewPrivateAdminAPI creates a new API definition for the full node private
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// admin methods of the Ethereum service.
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func NewPrivateAdminAPI(eth *Ethereum) *PrivateAdminAPI {
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	return &PrivateAdminAPI{eth: eth}
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}
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// ExportChain exports the current blockchain into a local file,
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// or a range of blocks if first and last are non-nil
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func (api *PrivateAdminAPI) ExportChain(file string, first *uint64, last *uint64) (bool, error) {
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	if first == nil && last != nil {
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		return false, errors.New("last cannot be specified without first")
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	}
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	if first != nil && last == nil {
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		head := api.eth.BlockChain().CurrentHeader().Number.Uint64()
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		last = &head
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	}
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	if _, err := os.Stat(file); err == nil {
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		// File already exists. Allowing overwrite could be a DoS vecotor,
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		// since the 'file' may point to arbitrary paths on the drive
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		return false, errors.New("location would overwrite an existing file")
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	}
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	// Make sure we can create the file to export into
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	out, err := os.OpenFile(file, os.O_CREATE|os.O_WRONLY|os.O_TRUNC, os.ModePerm)
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	if err != nil {
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		return false, err
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	}
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	defer out.Close()
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	var writer io.Writer = out
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	if strings.HasSuffix(file, ".gz") {
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		writer = gzip.NewWriter(writer)
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		defer writer.(*gzip.Writer).Close()
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	}
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	// Export the blockchain
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	if first != nil {
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		if err := api.eth.BlockChain().ExportN(writer, *first, *last); err != nil {
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			return false, err
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		}
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	} else if err := api.eth.BlockChain().Export(writer); err != nil {
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		return false, err
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	}
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	return true, nil
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}
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func hasAllBlocks(chain *core.BlockChain, bs []*types.Block) bool {
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	for _, b := range bs {
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		if !chain.HasBlock(b.Hash(), b.NumberU64()) {
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			return false
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		}
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	}
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	return true
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}
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// ImportChain imports a blockchain from a local file.
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func (api *PrivateAdminAPI) ImportChain(file string) (bool, error) {
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	// Make sure the can access the file to import
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	in, err := os.Open(file)
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	if err != nil {
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		return false, err
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	}
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	defer in.Close()
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	var reader io.Reader = in
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	if strings.HasSuffix(file, ".gz") {
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		if reader, err = gzip.NewReader(reader); err != nil {
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			return false, err
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		}
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	}
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	// Run actual the import in pre-configured batches
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	stream := rlp.NewStream(reader, 0)
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	blocks, index := make([]*types.Block, 0, 2500), 0
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	for batch := 0; ; batch++ {
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		// Load a batch of blocks from the input file
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		for len(blocks) < cap(blocks) {
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			block := new(types.Block)
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			if err := stream.Decode(block); err == io.EOF {
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				break
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			} else if err != nil {
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				return false, fmt.Errorf("block %d: failed to parse: %v", index, err)
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			}
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			blocks = append(blocks, block)
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			index++
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		}
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		if len(blocks) == 0 {
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			break
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		}
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		if hasAllBlocks(api.eth.BlockChain(), blocks) {
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			blocks = blocks[:0]
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			continue
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		}
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		// Import the batch and reset the buffer
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		if _, err := api.eth.BlockChain().InsertChain(blocks); err != nil {
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			return false, fmt.Errorf("batch %d: failed to insert: %v", batch, err)
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		}
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		blocks = blocks[:0]
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	}
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	return true, nil
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}
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// PublicDebugAPI is the collection of Ethereum full node APIs exposed
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// over the public debugging endpoint.
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type PublicDebugAPI struct {
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	eth *Ethereum
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}
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// NewPublicDebugAPI creates a new API definition for the full node-
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// related public debug methods of the Ethereum service.
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func NewPublicDebugAPI(eth *Ethereum) *PublicDebugAPI {
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	return &PublicDebugAPI{eth: eth}
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}
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// DumpBlock retrieves the entire state of the database at a given block.
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func (api *PublicDebugAPI) DumpBlock(blockNr rpc.BlockNumber) (state.Dump, error) {
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	opts := &state.DumpConfig{
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		OnlyWithAddresses: true,
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		Max:               AccountRangeMaxResults, // Sanity limit over RPC
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	}
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	if blockNr == rpc.PendingBlockNumber {
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		// If we're dumping the pending state, we need to request
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		// both the pending block as well as the pending state from
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		// the miner and operate on those
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		_, stateDb := api.eth.miner.Pending()
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		return stateDb.RawDump(opts), nil
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	}
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	var block *types.Block
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	if blockNr == rpc.LatestBlockNumber {
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		block = api.eth.blockchain.CurrentBlock()
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	} else {
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		block = api.eth.blockchain.GetBlockByNumber(uint64(blockNr))
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	}
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	if block == nil {
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		return state.Dump{}, fmt.Errorf("block #%d not found", blockNr)
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	}
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	stateDb, err := api.eth.BlockChain().StateAt(block.Root())
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	if err != nil {
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		return state.Dump{}, err
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	}
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	return stateDb.RawDump(opts), nil
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}
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// PrivateDebugAPI is the collection of Ethereum full node APIs exposed over
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// the private debugging endpoint.
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type PrivateDebugAPI struct {
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	eth *Ethereum
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}
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// NewPrivateDebugAPI creates a new API definition for the full node-related
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// private debug methods of the Ethereum service.
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func NewPrivateDebugAPI(eth *Ethereum) *PrivateDebugAPI {
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	return &PrivateDebugAPI{eth: eth}
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}
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// Preimage is a debug API function that returns the preimage for a sha3 hash, if known.
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func (api *PrivateDebugAPI) Preimage(ctx context.Context, hash common.Hash) (hexutil.Bytes, error) {
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	if preimage := rawdb.ReadPreimage(api.eth.ChainDb(), hash); preimage != nil {
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		return preimage, nil
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	}
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	return nil, errors.New("unknown preimage")
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}
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// BadBlockArgs represents the entries in the list returned when bad blocks are queried.
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type BadBlockArgs struct {
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	Hash  common.Hash            `json:"hash"`
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	Block map[string]interface{} `json:"block"`
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	RLP   string                 `json:"rlp"`
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}
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// GetBadBlocks returns a list of the last 'bad blocks' that the client has seen on the network
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// and returns them as a JSON list of block-hashes
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func (api *PrivateDebugAPI) GetBadBlocks(ctx context.Context) ([]*BadBlockArgs, error) {
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	var (
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		err     error
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		blocks  = rawdb.ReadAllBadBlocks(api.eth.chainDb)
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		results = make([]*BadBlockArgs, 0, len(blocks))
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	)
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	for _, block := range blocks {
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		var (
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			blockRlp  string
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			blockJSON map[string]interface{}
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		)
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		if rlpBytes, err := rlp.EncodeToBytes(block); err != nil {
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			blockRlp = err.Error() // Hacky, but hey, it works
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		} else {
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			blockRlp = fmt.Sprintf("0x%x", rlpBytes)
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		}
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		if blockJSON, err = ethapi.RPCMarshalBlock(block, true, true, api.eth.APIBackend.ChainConfig()); err != nil {
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			blockJSON = map[string]interface{}{"error": err.Error()}
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		}
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		results = append(results, &BadBlockArgs{
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			Hash:  block.Hash(),
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			RLP:   blockRlp,
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			Block: blockJSON,
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		})
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	}
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	return results, nil
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}
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// AccountRangeMaxResults is the maximum number of results to be returned per call
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const AccountRangeMaxResults = 256
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// AccountRange enumerates all accounts in the given block and start point in paging request
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func (api *PublicDebugAPI) AccountRange(blockNrOrHash rpc.BlockNumberOrHash, start []byte, maxResults int, nocode, nostorage, incompletes bool) (state.IteratorDump, error) {
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	var stateDb *state.StateDB
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	var err error
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	if number, ok := blockNrOrHash.Number(); ok {
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						|
		if number == rpc.PendingBlockNumber {
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			// If we're dumping the pending state, we need to request
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			// both the pending block as well as the pending state from
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			// the miner and operate on those
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			_, stateDb = api.eth.miner.Pending()
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		} else {
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			var block *types.Block
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			if number == rpc.LatestBlockNumber {
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				block = api.eth.blockchain.CurrentBlock()
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						|
			} else {
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				block = api.eth.blockchain.GetBlockByNumber(uint64(number))
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						|
			}
 | 
						|
			if block == nil {
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				return state.IteratorDump{}, fmt.Errorf("block #%d not found", number)
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			}
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			stateDb, err = api.eth.BlockChain().StateAt(block.Root())
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						|
			if err != nil {
 | 
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				return state.IteratorDump{}, err
 | 
						|
			}
 | 
						|
		}
 | 
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	} else if hash, ok := blockNrOrHash.Hash(); ok {
 | 
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		block := api.eth.blockchain.GetBlockByHash(hash)
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						|
		if block == nil {
 | 
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			return state.IteratorDump{}, fmt.Errorf("block %s not found", hash.Hex())
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		}
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		stateDb, err = api.eth.BlockChain().StateAt(block.Root())
 | 
						|
		if err != nil {
 | 
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			return state.IteratorDump{}, err
 | 
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		}
 | 
						|
	} else {
 | 
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		return state.IteratorDump{}, errors.New("either block number or block hash must be specified")
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	}
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	opts := &state.DumpConfig{
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		SkipCode:          nocode,
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		SkipStorage:       nostorage,
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		OnlyWithAddresses: !incompletes,
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		Start:             start,
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		Max:               uint64(maxResults),
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	}
 | 
						|
	if maxResults > AccountRangeMaxResults || maxResults <= 0 {
 | 
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		opts.Max = AccountRangeMaxResults
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	}
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	return stateDb.IteratorDump(opts), nil
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}
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// StorageRangeResult is the result of a debug_storageRangeAt API call.
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						|
type StorageRangeResult struct {
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	Storage storageMap   `json:"storage"`
 | 
						|
	NextKey *common.Hash `json:"nextKey"` // nil if Storage includes the last key in the trie.
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}
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 | 
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type storageMap map[common.Hash]storageEntry
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 | 
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type storageEntry struct {
 | 
						|
	Key   *common.Hash `json:"key"`
 | 
						|
	Value common.Hash  `json:"value"`
 | 
						|
}
 | 
						|
 | 
						|
// StorageRangeAt returns the storage at the given block height and transaction index.
 | 
						|
func (api *PrivateDebugAPI) StorageRangeAt(blockHash common.Hash, txIndex int, contractAddress common.Address, keyStart hexutil.Bytes, maxResult int) (StorageRangeResult, error) {
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						|
	// Retrieve the block
 | 
						|
	block := api.eth.blockchain.GetBlockByHash(blockHash)
 | 
						|
	if block == nil {
 | 
						|
		return StorageRangeResult{}, fmt.Errorf("block %#x not found", blockHash)
 | 
						|
	}
 | 
						|
	_, _, statedb, err := api.eth.stateAtTransaction(block, txIndex, 0)
 | 
						|
	if err != nil {
 | 
						|
		return StorageRangeResult{}, err
 | 
						|
	}
 | 
						|
	st := statedb.StorageTrie(contractAddress)
 | 
						|
	if st == nil {
 | 
						|
		return StorageRangeResult{}, fmt.Errorf("account %x doesn't exist", contractAddress)
 | 
						|
	}
 | 
						|
	return storageRangeAt(st, keyStart, maxResult)
 | 
						|
}
 | 
						|
 | 
						|
func storageRangeAt(st state.Trie, start []byte, maxResult int) (StorageRangeResult, error) {
 | 
						|
	it := trie.NewIterator(st.NodeIterator(start))
 | 
						|
	result := StorageRangeResult{Storage: storageMap{}}
 | 
						|
	for i := 0; i < maxResult && it.Next(); i++ {
 | 
						|
		_, content, _, err := rlp.Split(it.Value)
 | 
						|
		if err != nil {
 | 
						|
			return StorageRangeResult{}, err
 | 
						|
		}
 | 
						|
		e := storageEntry{Value: common.BytesToHash(content)}
 | 
						|
		if preimage := st.GetKey(it.Key); preimage != nil {
 | 
						|
			preimage := common.BytesToHash(preimage)
 | 
						|
			e.Key = &preimage
 | 
						|
		}
 | 
						|
		result.Storage[common.BytesToHash(it.Key)] = e
 | 
						|
	}
 | 
						|
	// Add the 'next key' so clients can continue downloading.
 | 
						|
	if it.Next() {
 | 
						|
		next := common.BytesToHash(it.Key)
 | 
						|
		result.NextKey = &next
 | 
						|
	}
 | 
						|
	return result, nil
 | 
						|
}
 | 
						|
 | 
						|
// GetModifiedAccountsByNumber returns all accounts that have changed between the
 | 
						|
// two blocks specified. A change is defined as a difference in nonce, balance,
 | 
						|
// code hash, or storage hash.
 | 
						|
//
 | 
						|
// With one parameter, returns the list of accounts modified in the specified block.
 | 
						|
func (api *PrivateDebugAPI) GetModifiedAccountsByNumber(startNum uint64, endNum *uint64) ([]common.Address, error) {
 | 
						|
	var startBlock, endBlock *types.Block
 | 
						|
 | 
						|
	startBlock = api.eth.blockchain.GetBlockByNumber(startNum)
 | 
						|
	if startBlock == nil {
 | 
						|
		return nil, fmt.Errorf("start block %x not found", startNum)
 | 
						|
	}
 | 
						|
 | 
						|
	if endNum == nil {
 | 
						|
		endBlock = startBlock
 | 
						|
		startBlock = api.eth.blockchain.GetBlockByHash(startBlock.ParentHash())
 | 
						|
		if startBlock == nil {
 | 
						|
			return nil, fmt.Errorf("block %x has no parent", endBlock.Number())
 | 
						|
		}
 | 
						|
	} else {
 | 
						|
		endBlock = api.eth.blockchain.GetBlockByNumber(*endNum)
 | 
						|
		if endBlock == nil {
 | 
						|
			return nil, fmt.Errorf("end block %d not found", *endNum)
 | 
						|
		}
 | 
						|
	}
 | 
						|
	return api.getModifiedAccounts(startBlock, endBlock)
 | 
						|
}
 | 
						|
 | 
						|
// GetModifiedAccountsByHash returns all accounts that have changed between the
 | 
						|
// two blocks specified. A change is defined as a difference in nonce, balance,
 | 
						|
// code hash, or storage hash.
 | 
						|
//
 | 
						|
// With one parameter, returns the list of accounts modified in the specified block.
 | 
						|
func (api *PrivateDebugAPI) GetModifiedAccountsByHash(startHash common.Hash, endHash *common.Hash) ([]common.Address, error) {
 | 
						|
	var startBlock, endBlock *types.Block
 | 
						|
	startBlock = api.eth.blockchain.GetBlockByHash(startHash)
 | 
						|
	if startBlock == nil {
 | 
						|
		return nil, fmt.Errorf("start block %x not found", startHash)
 | 
						|
	}
 | 
						|
 | 
						|
	if endHash == nil {
 | 
						|
		endBlock = startBlock
 | 
						|
		startBlock = api.eth.blockchain.GetBlockByHash(startBlock.ParentHash())
 | 
						|
		if startBlock == nil {
 | 
						|
			return nil, fmt.Errorf("block %x has no parent", endBlock.Number())
 | 
						|
		}
 | 
						|
	} else {
 | 
						|
		endBlock = api.eth.blockchain.GetBlockByHash(*endHash)
 | 
						|
		if endBlock == nil {
 | 
						|
			return nil, fmt.Errorf("end block %x not found", *endHash)
 | 
						|
		}
 | 
						|
	}
 | 
						|
	return api.getModifiedAccounts(startBlock, endBlock)
 | 
						|
}
 | 
						|
 | 
						|
func (api *PrivateDebugAPI) getModifiedAccounts(startBlock, endBlock *types.Block) ([]common.Address, error) {
 | 
						|
	if startBlock.Number().Uint64() >= endBlock.Number().Uint64() {
 | 
						|
		return nil, fmt.Errorf("start block height (%d) must be less than end block height (%d)", startBlock.Number().Uint64(), endBlock.Number().Uint64())
 | 
						|
	}
 | 
						|
	triedb := api.eth.BlockChain().StateCache().TrieDB()
 | 
						|
 | 
						|
	oldTrie, err := trie.NewSecure(startBlock.Root(), triedb)
 | 
						|
	if err != nil {
 | 
						|
		return nil, err
 | 
						|
	}
 | 
						|
	newTrie, err := trie.NewSecure(endBlock.Root(), triedb)
 | 
						|
	if err != nil {
 | 
						|
		return nil, err
 | 
						|
	}
 | 
						|
	diff, _ := trie.NewDifferenceIterator(oldTrie.NodeIterator([]byte{}), newTrie.NodeIterator([]byte{}))
 | 
						|
	iter := trie.NewIterator(diff)
 | 
						|
 | 
						|
	var dirty []common.Address
 | 
						|
	for iter.Next() {
 | 
						|
		key := newTrie.GetKey(iter.Key)
 | 
						|
		if key == nil {
 | 
						|
			return nil, fmt.Errorf("no preimage found for hash %x", iter.Key)
 | 
						|
		}
 | 
						|
		dirty = append(dirty, common.BytesToAddress(key))
 | 
						|
	}
 | 
						|
	return dirty, nil
 | 
						|
}
 | 
						|
 | 
						|
// GetAccessibleState returns the first number where the node has accessible
 | 
						|
// state on disk. Note this being the post-state of that block and the pre-state
 | 
						|
// of the next block.
 | 
						|
// The (from, to) parameters are the sequence of blocks to search, which can go
 | 
						|
// either forwards or backwards
 | 
						|
func (api *PrivateDebugAPI) GetAccessibleState(from, to rpc.BlockNumber) (uint64, error) {
 | 
						|
	db := api.eth.ChainDb()
 | 
						|
	var pivot uint64
 | 
						|
	if p := rawdb.ReadLastPivotNumber(db); p != nil {
 | 
						|
		pivot = *p
 | 
						|
		log.Info("Found fast-sync pivot marker", "number", pivot)
 | 
						|
	}
 | 
						|
	var resolveNum = func(num rpc.BlockNumber) (uint64, error) {
 | 
						|
		// We don't have state for pending (-2), so treat it as latest
 | 
						|
		if num.Int64() < 0 {
 | 
						|
			block := api.eth.blockchain.CurrentBlock()
 | 
						|
			if block == nil {
 | 
						|
				return 0, fmt.Errorf("current block missing")
 | 
						|
			}
 | 
						|
			return block.NumberU64(), nil
 | 
						|
		}
 | 
						|
		return uint64(num.Int64()), nil
 | 
						|
	}
 | 
						|
	var (
 | 
						|
		start   uint64
 | 
						|
		end     uint64
 | 
						|
		delta   = int64(1)
 | 
						|
		lastLog time.Time
 | 
						|
		err     error
 | 
						|
	)
 | 
						|
	if start, err = resolveNum(from); err != nil {
 | 
						|
		return 0, err
 | 
						|
	}
 | 
						|
	if end, err = resolveNum(to); err != nil {
 | 
						|
		return 0, err
 | 
						|
	}
 | 
						|
	if start == end {
 | 
						|
		return 0, fmt.Errorf("from and to needs to be different")
 | 
						|
	}
 | 
						|
	if start > end {
 | 
						|
		delta = -1
 | 
						|
	}
 | 
						|
	for i := int64(start); i != int64(end); i += delta {
 | 
						|
		if time.Since(lastLog) > 8*time.Second {
 | 
						|
			log.Info("Finding roots", "from", start, "to", end, "at", i)
 | 
						|
			lastLog = time.Now()
 | 
						|
		}
 | 
						|
		if i < int64(pivot) {
 | 
						|
			continue
 | 
						|
		}
 | 
						|
		h := api.eth.BlockChain().GetHeaderByNumber(uint64(i))
 | 
						|
		if h == nil {
 | 
						|
			return 0, fmt.Errorf("missing header %d", i)
 | 
						|
		}
 | 
						|
		if ok, _ := api.eth.ChainDb().Has(h.Root[:]); ok {
 | 
						|
			return uint64(i), nil
 | 
						|
		}
 | 
						|
	}
 | 
						|
	return 0, fmt.Errorf("No state found")
 | 
						|
}
 |