forked from cerc-io/plugeth
209 lines
9.6 KiB
Go
209 lines
9.6 KiB
Go
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// Copyright 2017 The go-ethereum Authors
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// This file is part of go-ethereum.
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//
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// go-ethereum is free software: you can redistribute it and/or modify
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// it under the terms of the GNU 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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// go-ethereum 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 General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
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package main
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import (
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"encoding/binary"
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"errors"
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"math"
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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/consensus/ethash"
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"github.com/ethereum/go-ethereum/core"
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"github.com/ethereum/go-ethereum/params"
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)
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// parityChainSpec is the chain specification format used by Parity.
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type parityChainSpec struct {
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Name string `json:"name"`
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Engine struct {
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Ethash struct {
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Params struct {
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MinimumDifficulty *hexutil.Big `json:"minimumDifficulty"`
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DifficultyBoundDivisor *hexutil.Big `json:"difficultyBoundDivisor"`
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GasLimitBoundDivisor *hexutil.Big `json:"gasLimitBoundDivisor"`
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DurationLimit *hexutil.Big `json:"durationLimit"`
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BlockReward *hexutil.Big `json:"blockReward"`
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HomesteadTransition uint64 `json:"homesteadTransition"`
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EIP150Transition uint64 `json:"eip150Transition"`
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EIP160Transition uint64 `json:"eip160Transition"`
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EIP161abcTransition uint64 `json:"eip161abcTransition"`
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EIP161dTransition uint64 `json:"eip161dTransition"`
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EIP649Reward *hexutil.Big `json:"eip649Reward"`
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EIP100bTransition uint64 `json:"eip100bTransition"`
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EIP649Transition uint64 `json:"eip649Transition"`
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} `json:"params"`
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} `json:"Ethash"`
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} `json:"engine"`
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Params struct {
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MaximumExtraDataSize hexutil.Uint64 `json:"maximumExtraDataSize"`
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MinGasLimit *hexutil.Big `json:"minGasLimit"`
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NetworkID hexutil.Uint64 `json:"networkID"`
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MaxCodeSize uint64 `json:"maxCodeSize"`
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EIP155Transition uint64 `json:"eip155Transition"`
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EIP98Transition uint64 `json:"eip98Transition"`
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EIP86Transition uint64 `json:"eip86Transition"`
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EIP140Transition uint64 `json:"eip140Transition"`
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EIP211Transition uint64 `json:"eip211Transition"`
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EIP214Transition uint64 `json:"eip214Transition"`
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EIP658Transition uint64 `json:"eip658Transition"`
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} `json:"params"`
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Genesis struct {
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Seal struct {
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Ethereum struct {
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Nonce hexutil.Bytes `json:"nonce"`
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MixHash hexutil.Bytes `json:"mixHash"`
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} `json:"ethereum"`
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} `json:"seal"`
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Difficulty *hexutil.Big `json:"difficulty"`
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Author common.Address `json:"author"`
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Timestamp hexutil.Uint64 `json:"timestamp"`
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ParentHash common.Hash `json:"parentHash"`
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ExtraData hexutil.Bytes `json:"extraData"`
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GasLimit hexutil.Uint64 `json:"gasLimit"`
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} `json:"genesis"`
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Nodes []string `json:"nodes"`
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Accounts map[common.Address]*parityChainSpecAccount `json:"accounts"`
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}
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// parityChainSpecAccount is the prefunded genesis account and/or precompiled
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// contract definition.
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type parityChainSpecAccount struct {
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Balance *hexutil.Big `json:"balance"`
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Nonce uint64 `json:"nonce,omitempty"`
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Builtin *parityChainSpecBuiltin `json:"builtin,omitempty"`
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}
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// parityChainSpecBuiltin is the precompiled contract definition.
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type parityChainSpecBuiltin struct {
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Name string `json:"name,omitempty"`
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ActivateAt uint64 `json:"activate_at,omitempty"`
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Pricing *parityChainSpecPricing `json:"pricing,omitempty"`
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}
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// parityChainSpecPricing represents the different pricing models that builtin
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// contracts might advertise using.
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type parityChainSpecPricing struct {
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Linear *parityChainSpecLinearPricing `json:"linear,omitempty"`
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ModExp *parityChainSpecModExpPricing `json:"modexp,omitempty"`
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AltBnPairing *parityChainSpecAltBnPairingPricing `json:"alt_bn128_pairing,omitempty"`
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}
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type parityChainSpecLinearPricing struct {
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Base uint64 `json:"base"`
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Word uint64 `json:"word"`
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}
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type parityChainSpecModExpPricing struct {
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Divisor uint64 `json:"divisor"`
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}
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type parityChainSpecAltBnPairingPricing struct {
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Base uint64 `json:"base"`
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Pair uint64 `json:"pair"`
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}
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// newParityChainSpec converts a go-ethereum genesis block into a Parity specific
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// chain specification format.
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func newParityChainSpec(network string, genesis *core.Genesis, bootnodes []string) (*parityChainSpec, error) {
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// Only ethash is currently supported between go-ethereum and Parity
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if genesis.Config.Ethash == nil {
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return nil, errors.New("unsupported consensus engine")
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}
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// Reconstruct the chain spec in Parity's format
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spec := &parityChainSpec{
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Name: network,
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Nodes: bootnodes,
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}
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spec.Engine.Ethash.Params.MinimumDifficulty = (*hexutil.Big)(params.MinimumDifficulty)
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spec.Engine.Ethash.Params.DifficultyBoundDivisor = (*hexutil.Big)(params.DifficultyBoundDivisor)
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spec.Engine.Ethash.Params.GasLimitBoundDivisor = (*hexutil.Big)(params.GasLimitBoundDivisor)
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spec.Engine.Ethash.Params.DurationLimit = (*hexutil.Big)(params.DurationLimit)
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spec.Engine.Ethash.Params.BlockReward = (*hexutil.Big)(ethash.FrontierBlockReward)
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spec.Engine.Ethash.Params.HomesteadTransition = genesis.Config.HomesteadBlock.Uint64()
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spec.Engine.Ethash.Params.EIP150Transition = genesis.Config.EIP150Block.Uint64()
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spec.Engine.Ethash.Params.EIP160Transition = genesis.Config.EIP155Block.Uint64()
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spec.Engine.Ethash.Params.EIP161abcTransition = genesis.Config.EIP158Block.Uint64()
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spec.Engine.Ethash.Params.EIP161dTransition = genesis.Config.EIP158Block.Uint64()
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spec.Engine.Ethash.Params.EIP649Reward = (*hexutil.Big)(ethash.ByzantiumBlockReward)
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spec.Engine.Ethash.Params.EIP100bTransition = genesis.Config.ByzantiumBlock.Uint64()
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spec.Engine.Ethash.Params.EIP649Transition = genesis.Config.ByzantiumBlock.Uint64()
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spec.Params.MaximumExtraDataSize = (hexutil.Uint64)(params.MaximumExtraDataSize)
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spec.Params.MinGasLimit = (*hexutil.Big)(params.MinGasLimit)
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spec.Params.NetworkID = (hexutil.Uint64)(genesis.Config.ChainId.Uint64())
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spec.Params.MaxCodeSize = params.MaxCodeSize
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spec.Params.EIP155Transition = genesis.Config.EIP155Block.Uint64()
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spec.Params.EIP98Transition = math.MaxUint64
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spec.Params.EIP86Transition = math.MaxUint64
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spec.Params.EIP140Transition = genesis.Config.ByzantiumBlock.Uint64()
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spec.Params.EIP211Transition = genesis.Config.ByzantiumBlock.Uint64()
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spec.Params.EIP214Transition = genesis.Config.ByzantiumBlock.Uint64()
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spec.Params.EIP658Transition = genesis.Config.ByzantiumBlock.Uint64()
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spec.Genesis.Seal.Ethereum.Nonce = (hexutil.Bytes)(make([]byte, 8))
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binary.LittleEndian.PutUint64(spec.Genesis.Seal.Ethereum.Nonce[:], genesis.Nonce)
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spec.Genesis.Seal.Ethereum.MixHash = (hexutil.Bytes)(genesis.Mixhash[:])
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spec.Genesis.Difficulty = (*hexutil.Big)(genesis.Difficulty)
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spec.Genesis.Author = genesis.Coinbase
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spec.Genesis.Timestamp = (hexutil.Uint64)(genesis.Timestamp)
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spec.Genesis.ParentHash = genesis.ParentHash
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spec.Genesis.ExtraData = (hexutil.Bytes)(genesis.ExtraData)
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spec.Genesis.GasLimit = (hexutil.Uint64)(genesis.GasLimit)
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spec.Accounts = make(map[common.Address]*parityChainSpecAccount)
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for address, account := range genesis.Alloc {
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spec.Accounts[address] = &parityChainSpecAccount{
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Balance: (*hexutil.Big)(account.Balance),
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Nonce: account.Nonce,
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}
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}
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spec.Accounts[common.BytesToAddress([]byte{1})].Builtin = &parityChainSpecBuiltin{
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Name: "ecrecover", Pricing: &parityChainSpecPricing{Linear: &parityChainSpecLinearPricing{Base: 3000}},
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}
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spec.Accounts[common.BytesToAddress([]byte{2})].Builtin = &parityChainSpecBuiltin{
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Name: "sha256", Pricing: &parityChainSpecPricing{Linear: &parityChainSpecLinearPricing{Base: 60, Word: 12}},
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}
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spec.Accounts[common.BytesToAddress([]byte{3})].Builtin = &parityChainSpecBuiltin{
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Name: "ripemd160", Pricing: &parityChainSpecPricing{Linear: &parityChainSpecLinearPricing{Base: 600, Word: 120}},
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}
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spec.Accounts[common.BytesToAddress([]byte{4})].Builtin = &parityChainSpecBuiltin{
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Name: "identity", Pricing: &parityChainSpecPricing{Linear: &parityChainSpecLinearPricing{Base: 15, Word: 3}},
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}
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if genesis.Config.ByzantiumBlock != nil {
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spec.Accounts[common.BytesToAddress([]byte{5})].Builtin = &parityChainSpecBuiltin{
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Name: "modexp", ActivateAt: genesis.Config.ByzantiumBlock.Uint64(), Pricing: &parityChainSpecPricing{ModExp: &parityChainSpecModExpPricing{Divisor: 20}},
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}
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spec.Accounts[common.BytesToAddress([]byte{6})].Builtin = &parityChainSpecBuiltin{
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Name: "alt_bn128_add", ActivateAt: genesis.Config.ByzantiumBlock.Uint64(), Pricing: &parityChainSpecPricing{Linear: &parityChainSpecLinearPricing{Base: 500}},
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}
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spec.Accounts[common.BytesToAddress([]byte{7})].Builtin = &parityChainSpecBuiltin{
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Name: "alt_bn128_mul", ActivateAt: genesis.Config.ByzantiumBlock.Uint64(), Pricing: &parityChainSpecPricing{Linear: &parityChainSpecLinearPricing{Base: 40000}},
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}
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spec.Accounts[common.BytesToAddress([]byte{8})].Builtin = &parityChainSpecBuiltin{
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Name: "alt_bn128_pairing", ActivateAt: genesis.Config.ByzantiumBlock.Uint64(), Pricing: &parityChainSpecPricing{AltBnPairing: &parityChainSpecAltBnPairingPricing{Base: 100000, Pair: 80000}},
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}
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}
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return spec, nil
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}
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