// Copyright 2017 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 main
import (
"encoding/binary"
"errors"
"math"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/common/hexutil"
"github.com/ethereum/go-ethereum/consensus/ethash"
"github.com/ethereum/go-ethereum/core"
"github.com/ethereum/go-ethereum/params"
)
// cppEthereumGenesisSpec represents the genesis specification format used by the
// C++ Ethereum implementation.
type cppEthereumGenesisSpec struct {
SealEngine string `json:"sealEngine"`
Params struct {
AccountStartNonce hexutil.Uint64 `json:"accountStartNonce"`
HomesteadForkBlock hexutil.Uint64 `json:"homesteadForkBlock"`
EIP150ForkBlock hexutil.Uint64 `json:"EIP150ForkBlock"`
EIP158ForkBlock hexutil.Uint64 `json:"EIP158ForkBlock"`
ByzantiumForkBlock hexutil.Uint64 `json:"byzantiumForkBlock"`
ConstantinopleForkBlock hexutil.Uint64 `json:"constantinopleForkBlock"`
NetworkID hexutil.Uint64 `json:"networkID"`
ChainID hexutil.Uint64 `json:"chainID"`
MaximumExtraDataSize hexutil.Uint64 `json:"maximumExtraDataSize"`
MinGasLimit hexutil.Uint64 `json:"minGasLimit"`
MaxGasLimit hexutil.Uint64 `json:"maxGasLimit"`
GasLimitBoundDivisor hexutil.Uint64 `json:"gasLimitBoundDivisor"`
MinimumDifficulty *hexutil.Big `json:"minimumDifficulty"`
DifficultyBoundDivisor *hexutil.Big `json:"difficultyBoundDivisor"`
DurationLimit *hexutil.Big `json:"durationLimit"`
BlockReward *hexutil.Big `json:"blockReward"`
} `json:"params"`
Genesis struct {
Nonce hexutil.Bytes `json:"nonce"`
Difficulty *hexutil.Big `json:"difficulty"`
MixHash common.Hash `json:"mixHash"`
Author common.Address `json:"author"`
Timestamp hexutil.Uint64 `json:"timestamp"`
ParentHash common.Hash `json:"parentHash"`
ExtraData hexutil.Bytes `json:"extraData"`
GasLimit hexutil.Uint64 `json:"gasLimit"`
} `json:"genesis"`
Accounts map[common.Address]*cppEthereumGenesisSpecAccount `json:"accounts"`
}
// cppEthereumGenesisSpecAccount is the prefunded genesis account and/or precompiled
// contract definition.
type cppEthereumGenesisSpecAccount struct {
Balance *hexutil.Big `json:"balance"`
Nonce uint64 `json:"nonce,omitempty"`
Precompiled *cppEthereumGenesisSpecBuiltin `json:"precompiled,omitempty"`
}
// cppEthereumGenesisSpecBuiltin is the precompiled contract definition.
type cppEthereumGenesisSpecBuiltin struct {
Name string `json:"name,omitempty"`
StartingBlock hexutil.Uint64 `json:"startingBlock,omitempty"`
Linear *cppEthereumGenesisSpecLinearPricing `json:"linear,omitempty"`
}
type cppEthereumGenesisSpecLinearPricing struct {
Base uint64 `json:"base"`
Word uint64 `json:"word"`
}
// newCppEthereumGenesisSpec converts a go-ethereum genesis block into a Parity specific
// chain specification format.
func newCppEthereumGenesisSpec(network string, genesis *core.Genesis) (*cppEthereumGenesisSpec, error) {
// Only ethash is currently supported between go-ethereum and cpp-ethereum
if genesis.Config.Ethash == nil {
return nil, errors.New("unsupported consensus engine")
}
// Reconstruct the chain spec in Parity's format
spec := &cppEthereumGenesisSpec{
SealEngine: "Ethash",
}
spec.Params.AccountStartNonce = 0
spec.Params.HomesteadForkBlock = (hexutil.Uint64)(genesis.Config.HomesteadBlock.Uint64())
spec.Params.EIP150ForkBlock = (hexutil.Uint64)(genesis.Config.EIP150Block.Uint64())
spec.Params.EIP158ForkBlock = (hexutil.Uint64)(genesis.Config.EIP158Block.Uint64())
spec.Params.ByzantiumForkBlock = (hexutil.Uint64)(genesis.Config.ByzantiumBlock.Uint64())
spec.Params.ConstantinopleForkBlock = (hexutil.Uint64)(math.MaxUint64)
spec.Params.NetworkID = (hexutil.Uint64)(genesis.Config.ChainID.Uint64())
spec.Params.ChainID = (hexutil.Uint64)(genesis.Config.ChainID.Uint64())
spec.Params.MaximumExtraDataSize = (hexutil.Uint64)(params.MaximumExtraDataSize)
spec.Params.MinGasLimit = (hexutil.Uint64)(params.MinGasLimit)
spec.Params.MaxGasLimit = (hexutil.Uint64)(math.MaxUint64)
spec.Params.MinimumDifficulty = (*hexutil.Big)(params.MinimumDifficulty)
spec.Params.DifficultyBoundDivisor = (*hexutil.Big)(params.DifficultyBoundDivisor)
spec.Params.GasLimitBoundDivisor = (hexutil.Uint64)(params.GasLimitBoundDivisor)
spec.Params.DurationLimit = (*hexutil.Big)(params.DurationLimit)
spec.Params.BlockReward = (*hexutil.Big)(ethash.FrontierBlockReward)
spec.Genesis.Nonce = (hexutil.Bytes)(make([]byte, 8))
binary.LittleEndian.PutUint64(spec.Genesis.Nonce[:], genesis.Nonce)
spec.Genesis.MixHash = genesis.Mixhash
spec.Genesis.Difficulty = (*hexutil.Big)(genesis.Difficulty)
spec.Genesis.Author = genesis.Coinbase
spec.Genesis.Timestamp = (hexutil.Uint64)(genesis.Timestamp)
spec.Genesis.ParentHash = genesis.ParentHash
spec.Genesis.ExtraData = (hexutil.Bytes)(genesis.ExtraData)
spec.Genesis.GasLimit = (hexutil.Uint64)(genesis.GasLimit)
spec.Accounts = make(map[common.Address]*cppEthereumGenesisSpecAccount)
for address, account := range genesis.Alloc {
spec.Accounts[address] = &cppEthereumGenesisSpecAccount{
Balance: (*hexutil.Big)(account.Balance),
Nonce: account.Nonce,
}
}
spec.Accounts[common.BytesToAddress([]byte{1})].Precompiled = &cppEthereumGenesisSpecBuiltin{
Name: "ecrecover", Linear: &cppEthereumGenesisSpecLinearPricing{Base: 3000},
}
spec.Accounts[common.BytesToAddress([]byte{2})].Precompiled = &cppEthereumGenesisSpecBuiltin{
Name: "sha256", Linear: &cppEthereumGenesisSpecLinearPricing{Base: 60, Word: 12},
}
spec.Accounts[common.BytesToAddress([]byte{3})].Precompiled = &cppEthereumGenesisSpecBuiltin{
Name: "ripemd160", Linear: &cppEthereumGenesisSpecLinearPricing{Base: 600, Word: 120},
}
spec.Accounts[common.BytesToAddress([]byte{4})].Precompiled = &cppEthereumGenesisSpecBuiltin{
Name: "identity", Linear: &cppEthereumGenesisSpecLinearPricing{Base: 15, Word: 3},
}
if genesis.Config.ByzantiumBlock != nil {
spec.Accounts[common.BytesToAddress([]byte{5})].Precompiled = &cppEthereumGenesisSpecBuiltin{
Name: "modexp", StartingBlock: (hexutil.Uint64)(genesis.Config.ByzantiumBlock.Uint64()),
}
spec.Accounts[common.BytesToAddress([]byte{6})].Precompiled = &cppEthereumGenesisSpecBuiltin{
Name: "alt_bn128_G1_add", StartingBlock: (hexutil.Uint64)(genesis.Config.ByzantiumBlock.Uint64()), Linear: &cppEthereumGenesisSpecLinearPricing{Base: 500},
}
spec.Accounts[common.BytesToAddress([]byte{7})].Precompiled = &cppEthereumGenesisSpecBuiltin{
Name: "alt_bn128_G1_mul", StartingBlock: (hexutil.Uint64)(genesis.Config.ByzantiumBlock.Uint64()), Linear: &cppEthereumGenesisSpecLinearPricing{Base: 40000},
}
spec.Accounts[common.BytesToAddress([]byte{8})].Precompiled = &cppEthereumGenesisSpecBuiltin{
Name: "alt_bn128_pairing_product", StartingBlock: (hexutil.Uint64)(genesis.Config.ByzantiumBlock.Uint64()),
}
}
return spec, nil
}
// parityChainSpec is the chain specification format used by Parity.
type parityChainSpec struct {
Name string `json:"name"`
Engine struct {
Ethash struct {
Params struct {
MinimumDifficulty *hexutil.Big `json:"minimumDifficulty"`
DifficultyBoundDivisor *hexutil.Big `json:"difficultyBoundDivisor"`
DurationLimit *hexutil.Big `json:"durationLimit"`
BlockReward *hexutil.Big `json:"blockReward"`
HomesteadTransition uint64 `json:"homesteadTransition"`
EIP150Transition uint64 `json:"eip150Transition"`
EIP160Transition uint64 `json:"eip160Transition"`
EIP161abcTransition uint64 `json:"eip161abcTransition"`
EIP161dTransition uint64 `json:"eip161dTransition"`
EIP649Reward *hexutil.Big `json:"eip649Reward"`
EIP100bTransition uint64 `json:"eip100bTransition"`
EIP649Transition uint64 `json:"eip649Transition"`
} `json:"params"`
} `json:"Ethash"`
} `json:"engine"`
Params struct {
MaximumExtraDataSize hexutil.Uint64 `json:"maximumExtraDataSize"`
MinGasLimit hexutil.Uint64 `json:"minGasLimit"`
GasLimitBoundDivisor hexutil.Uint64 `json:"gasLimitBoundDivisor"`
NetworkID hexutil.Uint64 `json:"networkID"`
MaxCodeSize uint64 `json:"maxCodeSize"`
EIP155Transition uint64 `json:"eip155Transition"`
EIP98Transition uint64 `json:"eip98Transition"`
EIP86Transition uint64 `json:"eip86Transition"`
EIP140Transition uint64 `json:"eip140Transition"`
EIP211Transition uint64 `json:"eip211Transition"`
EIP214Transition uint64 `json:"eip214Transition"`
EIP658Transition uint64 `json:"eip658Transition"`
} `json:"params"`
Genesis struct {
Seal struct {
Ethereum struct {
Nonce hexutil.Bytes `json:"nonce"`
MixHash hexutil.Bytes `json:"mixHash"`
} `json:"ethereum"`
} `json:"seal"`
Difficulty *hexutil.Big `json:"difficulty"`
Author common.Address `json:"author"`
Timestamp hexutil.Uint64 `json:"timestamp"`
ParentHash common.Hash `json:"parentHash"`
ExtraData hexutil.Bytes `json:"extraData"`
GasLimit hexutil.Uint64 `json:"gasLimit"`
} `json:"genesis"`
Nodes []string `json:"nodes"`
Accounts map[common.Address]*parityChainSpecAccount `json:"accounts"`
}
// parityChainSpecAccount is the prefunded genesis account and/or precompiled
// contract definition.
type parityChainSpecAccount struct {
Balance *hexutil.Big `json:"balance"`
Nonce uint64 `json:"nonce,omitempty"`
Builtin *parityChainSpecBuiltin `json:"builtin,omitempty"`
}
// parityChainSpecBuiltin is the precompiled contract definition.
type parityChainSpecBuiltin struct {
Name string `json:"name,omitempty"`
ActivateAt uint64 `json:"activate_at,omitempty"`
Pricing *parityChainSpecPricing `json:"pricing,omitempty"`
}
// parityChainSpecPricing represents the different pricing models that builtin
// contracts might advertise using.
type parityChainSpecPricing struct {
Linear *parityChainSpecLinearPricing `json:"linear,omitempty"`
ModExp *parityChainSpecModExpPricing `json:"modexp,omitempty"`
AltBnPairing *parityChainSpecAltBnPairingPricing `json:"alt_bn128_pairing,omitempty"`
}
type parityChainSpecLinearPricing struct {
Base uint64 `json:"base"`
Word uint64 `json:"word"`
}
type parityChainSpecModExpPricing struct {
Divisor uint64 `json:"divisor"`
}
type parityChainSpecAltBnPairingPricing struct {
Base uint64 `json:"base"`
Pair uint64 `json:"pair"`
}
// newParityChainSpec converts a go-ethereum genesis block into a Parity specific
// chain specification format.
func newParityChainSpec(network string, genesis *core.Genesis, bootnodes []string) (*parityChainSpec, error) {
// Only ethash is currently supported between go-ethereum and Parity
if genesis.Config.Ethash == nil {
return nil, errors.New("unsupported consensus engine")
}
// Reconstruct the chain spec in Parity's format
spec := &parityChainSpec{
Name: network,
Nodes: bootnodes,
}
spec.Engine.Ethash.Params.MinimumDifficulty = (*hexutil.Big)(params.MinimumDifficulty)
spec.Engine.Ethash.Params.DifficultyBoundDivisor = (*hexutil.Big)(params.DifficultyBoundDivisor)
spec.Engine.Ethash.Params.DurationLimit = (*hexutil.Big)(params.DurationLimit)
spec.Engine.Ethash.Params.BlockReward = (*hexutil.Big)(ethash.FrontierBlockReward)
spec.Engine.Ethash.Params.HomesteadTransition = genesis.Config.HomesteadBlock.Uint64()
spec.Engine.Ethash.Params.EIP150Transition = genesis.Config.EIP150Block.Uint64()
spec.Engine.Ethash.Params.EIP160Transition = genesis.Config.EIP155Block.Uint64()
spec.Engine.Ethash.Params.EIP161abcTransition = genesis.Config.EIP158Block.Uint64()
spec.Engine.Ethash.Params.EIP161dTransition = genesis.Config.EIP158Block.Uint64()
spec.Engine.Ethash.Params.EIP649Reward = (*hexutil.Big)(ethash.ByzantiumBlockReward)
spec.Engine.Ethash.Params.EIP100bTransition = genesis.Config.ByzantiumBlock.Uint64()
spec.Engine.Ethash.Params.EIP649Transition = genesis.Config.ByzantiumBlock.Uint64()
spec.Params.MaximumExtraDataSize = (hexutil.Uint64)(params.MaximumExtraDataSize)
spec.Params.MinGasLimit = (hexutil.Uint64)(params.MinGasLimit)
spec.Params.GasLimitBoundDivisor = (hexutil.Uint64)(params.GasLimitBoundDivisor)
spec.Params.NetworkID = (hexutil.Uint64)(genesis.Config.ChainID.Uint64())
spec.Params.MaxCodeSize = params.MaxCodeSize
spec.Params.EIP155Transition = genesis.Config.EIP155Block.Uint64()
spec.Params.EIP98Transition = math.MaxUint64
spec.Params.EIP86Transition = math.MaxUint64
spec.Params.EIP140Transition = genesis.Config.ByzantiumBlock.Uint64()
spec.Params.EIP211Transition = genesis.Config.ByzantiumBlock.Uint64()
spec.Params.EIP214Transition = genesis.Config.ByzantiumBlock.Uint64()
spec.Params.EIP658Transition = genesis.Config.ByzantiumBlock.Uint64()
spec.Genesis.Seal.Ethereum.Nonce = (hexutil.Bytes)(make([]byte, 8))
binary.LittleEndian.PutUint64(spec.Genesis.Seal.Ethereum.Nonce[:], genesis.Nonce)
spec.Genesis.Seal.Ethereum.MixHash = (hexutil.Bytes)(genesis.Mixhash[:])
spec.Genesis.Difficulty = (*hexutil.Big)(genesis.Difficulty)
spec.Genesis.Author = genesis.Coinbase
spec.Genesis.Timestamp = (hexutil.Uint64)(genesis.Timestamp)
spec.Genesis.ParentHash = genesis.ParentHash
spec.Genesis.ExtraData = (hexutil.Bytes)(genesis.ExtraData)
spec.Genesis.GasLimit = (hexutil.Uint64)(genesis.GasLimit)
spec.Accounts = make(map[common.Address]*parityChainSpecAccount)
for address, account := range genesis.Alloc {
spec.Accounts[address] = &parityChainSpecAccount{
Balance: (*hexutil.Big)(account.Balance),
Nonce: account.Nonce,
}
}
spec.Accounts[common.BytesToAddress([]byte{1})].Builtin = &parityChainSpecBuiltin{
Name: "ecrecover", Pricing: &parityChainSpecPricing{Linear: &parityChainSpecLinearPricing{Base: 3000}},
}
spec.Accounts[common.BytesToAddress([]byte{2})].Builtin = &parityChainSpecBuiltin{
Name: "sha256", Pricing: &parityChainSpecPricing{Linear: &parityChainSpecLinearPricing{Base: 60, Word: 12}},
}
spec.Accounts[common.BytesToAddress([]byte{3})].Builtin = &parityChainSpecBuiltin{
Name: "ripemd160", Pricing: &parityChainSpecPricing{Linear: &parityChainSpecLinearPricing{Base: 600, Word: 120}},
}
spec.Accounts[common.BytesToAddress([]byte{4})].Builtin = &parityChainSpecBuiltin{
Name: "identity", Pricing: &parityChainSpecPricing{Linear: &parityChainSpecLinearPricing{Base: 15, Word: 3}},
}
if genesis.Config.ByzantiumBlock != nil {
spec.Accounts[common.BytesToAddress([]byte{5})].Builtin = &parityChainSpecBuiltin{
Name: "modexp", ActivateAt: genesis.Config.ByzantiumBlock.Uint64(), Pricing: &parityChainSpecPricing{ModExp: &parityChainSpecModExpPricing{Divisor: 20}},
}
spec.Accounts[common.BytesToAddress([]byte{6})].Builtin = &parityChainSpecBuiltin{
Name: "alt_bn128_add", ActivateAt: genesis.Config.ByzantiumBlock.Uint64(), Pricing: &parityChainSpecPricing{Linear: &parityChainSpecLinearPricing{Base: 500}},
}
spec.Accounts[common.BytesToAddress([]byte{7})].Builtin = &parityChainSpecBuiltin{
Name: "alt_bn128_mul", ActivateAt: genesis.Config.ByzantiumBlock.Uint64(), Pricing: &parityChainSpecPricing{Linear: &parityChainSpecLinearPricing{Base: 40000}},
}
spec.Accounts[common.BytesToAddress([]byte{8})].Builtin = &parityChainSpecBuiltin{
Name: "alt_bn128_pairing", ActivateAt: genesis.Config.ByzantiumBlock.Uint64(), Pricing: &parityChainSpecPricing{AltBnPairing: &parityChainSpecAltBnPairingPricing{Base: 100000, Pair: 80000}},
}
}
return spec, nil
}
// pyEthereumGenesisSpec represents the genesis specification format used by the
// Python Ethereum implementation.
type pyEthereumGenesisSpec struct {
Nonce hexutil.Bytes `json:"nonce"`
Timestamp hexutil.Uint64 `json:"timestamp"`
ExtraData hexutil.Bytes `json:"extraData"`
GasLimit hexutil.Uint64 `json:"gasLimit"`
Difficulty *hexutil.Big `json:"difficulty"`
Mixhash common.Hash `json:"mixhash"`
Coinbase common.Address `json:"coinbase"`
Alloc core.GenesisAlloc `json:"alloc"`
ParentHash common.Hash `json:"parentHash"`
}
// newPyEthereumGenesisSpec converts a go-ethereum genesis block into a Parity specific
// chain specification format.
func newPyEthereumGenesisSpec(network string, genesis *core.Genesis) (*pyEthereumGenesisSpec, error) {
// Only ethash is currently supported between go-ethereum and pyethereum
if genesis.Config.Ethash == nil {
return nil, errors.New("unsupported consensus engine")
}
spec := &pyEthereumGenesisSpec{
Timestamp: (hexutil.Uint64)(genesis.Timestamp),
ExtraData: genesis.ExtraData,
GasLimit: (hexutil.Uint64)(genesis.GasLimit),
Difficulty: (*hexutil.Big)(genesis.Difficulty),
Mixhash: genesis.Mixhash,
Coinbase: genesis.Coinbase,
Alloc: genesis.Alloc,
ParentHash: genesis.ParentHash,
}
spec.Nonce = (hexutil.Bytes)(make([]byte, 8))
binary.LittleEndian.PutUint64(spec.Nonce[:], genesis.Nonce)
return spec, nil
}
