405 lines
16 KiB
Go
405 lines
16 KiB
Go
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// Copyright 2016 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 params
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import (
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"fmt"
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"math/big"
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"github.com/ethereum/go-ethereum/common"
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)
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// Genesis hashes to enforce below configs on.
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var (
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MainnetGenesisHash = common.HexToHash("0xd4e56740f876aef8c010b86a40d5f56745a118d0906a34e69aec8c0db1cb8fa3")
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TestnetGenesisHash = common.HexToHash("0x41941023680923e0fe4d74a34bdac8141f2540e3ae90623718e47d66d1ca4a2d")
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RinkebyGenesisHash = common.HexToHash("0x6341fd3daf94b748c72ced5a5b26028f2474f5f00d824504e4fa37a75767e177")
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)
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var (
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// MainnetChainConfig is the chain parameters to run a node on the main network.
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MainnetChainConfig = &ChainConfig{
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ChainID: big.NewInt(1),
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HomesteadBlock: big.NewInt(1150000),
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DAOForkBlock: big.NewInt(1920000),
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DAOForkSupport: true,
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EIP150Block: big.NewInt(2463000),
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EIP150Hash: common.HexToHash("0x2086799aeebeae135c246c65021c82b4e15a2c451340993aacfd2751886514f0"),
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EIP155Block: big.NewInt(2675000),
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EIP158Block: big.NewInt(2675000),
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ByzantiumBlock: big.NewInt(4370000),
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ConstantinopleBlock: nil,
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Ethash: new(EthashConfig),
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}
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// MainnetTrustedCheckpoint contains the light client trusted checkpoint for the main network.
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MainnetTrustedCheckpoint = &TrustedCheckpoint{
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Name: "mainnet",
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SectionIndex: 193,
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SectionHead: common.HexToHash("0xc2d574295ecedc4d58530ae24c31a5a98be7d2b3327fba0dd0f4ed3913828a55"),
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CHTRoot: common.HexToHash("0x5d1027dfae688c77376e842679ceada87fd94738feb9b32ef165473bfbbb317b"),
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BloomRoot: common.HexToHash("0xd38be1a06aabd568e10957fee4fcc523bc64996bcf31bae3f55f86e0a583919f"),
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}
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// TestnetChainConfig contains the chain parameters to run a node on the Ropsten test network.
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TestnetChainConfig = &ChainConfig{
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ChainID: big.NewInt(3),
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HomesteadBlock: big.NewInt(0),
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DAOForkBlock: nil,
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DAOForkSupport: true,
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EIP150Block: big.NewInt(0),
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EIP150Hash: common.HexToHash("0x41941023680923e0fe4d74a34bdac8141f2540e3ae90623718e47d66d1ca4a2d"),
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EIP155Block: big.NewInt(10),
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EIP158Block: big.NewInt(10),
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ByzantiumBlock: big.NewInt(1700000),
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ConstantinopleBlock: nil,
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Ethash: new(EthashConfig),
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}
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// TestnetTrustedCheckpoint contains the light client trusted checkpoint for the Ropsten test network.
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TestnetTrustedCheckpoint = &TrustedCheckpoint{
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Name: "testnet",
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SectionIndex: 123,
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SectionHead: common.HexToHash("0xa372a53decb68ce453da12bea1c8ee7b568b276aa2aab94d9060aa7c81fc3dee"),
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CHTRoot: common.HexToHash("0x6b02e7fada79cd2a80d4b3623df9c44384d6647fc127462e1c188ccd09ece87b"),
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BloomRoot: common.HexToHash("0xf2d27490914968279d6377d42868928632573e823b5d1d4a944cba6009e16259"),
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}
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// RinkebyChainConfig contains the chain parameters to run a node on the Rinkeby test network.
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RinkebyChainConfig = &ChainConfig{
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ChainID: big.NewInt(4),
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HomesteadBlock: big.NewInt(1),
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DAOForkBlock: nil,
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DAOForkSupport: true,
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EIP150Block: big.NewInt(2),
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EIP150Hash: common.HexToHash("0x9b095b36c15eaf13044373aef8ee0bd3a382a5abb92e402afa44b8249c3a90e9"),
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EIP155Block: big.NewInt(3),
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EIP158Block: big.NewInt(3),
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ByzantiumBlock: big.NewInt(1035301),
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ConstantinopleBlock: nil,
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Clique: &CliqueConfig{
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Period: 15,
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Epoch: 30000,
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},
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}
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// RinkebyTrustedCheckpoint contains the light client trusted checkpoint for the Rinkeby test network.
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RinkebyTrustedCheckpoint = &TrustedCheckpoint{
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Name: "rinkeby",
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SectionIndex: 91,
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SectionHead: common.HexToHash("0x435b7b2d8a7922f3b9a522f2fb02730e95e0e1782f0f5443894d5415bba37154"),
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CHTRoot: common.HexToHash("0x0664bf7ecccfb6775c4eca6f0f264fb5282a22754a2135a1ac4bff2ef02898dd"),
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BloomRoot: common.HexToHash("0x2a64df2400c3a2cb6400639bb6ed29389abdb4d93e2e525aa7c21f38767cd96f"),
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}
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// AllEthashProtocolChanges contains every protocol change (EIPs) introduced
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// and accepted by the Ethereum core developers into the Ethash consensus.
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//
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// This configuration is intentionally not using keyed fields to force anyone
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// adding flags to the config to also have to set these fields.
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AllEthashProtocolChanges = &ChainConfig{big.NewInt(1337), big.NewInt(0), nil, false, big.NewInt(0), common.Hash{}, big.NewInt(0), big.NewInt(0), big.NewInt(0), nil, nil, new(EthashConfig), nil}
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// AllCliqueProtocolChanges contains every protocol change (EIPs) introduced
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// and accepted by the Ethereum core developers into the Clique consensus.
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//
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// This configuration is intentionally not using keyed fields to force anyone
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// adding flags to the config to also have to set these fields.
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AllCliqueProtocolChanges = &ChainConfig{big.NewInt(1337), big.NewInt(0), nil, false, big.NewInt(0), common.Hash{}, big.NewInt(0), big.NewInt(0), big.NewInt(0), nil, nil, nil, &CliqueConfig{Period: 0, Epoch: 30000}}
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TestChainConfig = &ChainConfig{big.NewInt(1), big.NewInt(0), nil, false, big.NewInt(0), common.Hash{}, big.NewInt(0), big.NewInt(0), big.NewInt(0), nil, nil, new(EthashConfig), nil}
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TestRules = TestChainConfig.Rules(new(big.Int))
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)
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// TrustedCheckpoint represents a set of post-processed trie roots (CHT and
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// BloomTrie) associated with the appropriate section index and head hash. It is
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// used to start light syncing from this checkpoint and avoid downloading the
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// entire header chain while still being able to securely access old headers/logs.
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type TrustedCheckpoint struct {
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Name string `json:"-"`
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SectionIndex uint64 `json:"sectionIndex"`
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SectionHead common.Hash `json:"sectionHead"`
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CHTRoot common.Hash `json:"chtRoot"`
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BloomRoot common.Hash `json:"bloomRoot"`
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}
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// ChainConfig is the core config which determines the blockchain settings.
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//
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// ChainConfig is stored in the database on a per block basis. This means
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// that any network, identified by its genesis block, can have its own
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// set of configuration options.
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type ChainConfig struct {
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ChainID *big.Int `json:"chainId"` // chainId identifies the current chain and is used for replay protection
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HomesteadBlock *big.Int `json:"homesteadBlock,omitempty"` // Homestead switch block (nil = no fork, 0 = already homestead)
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DAOForkBlock *big.Int `json:"daoForkBlock,omitempty"` // TheDAO hard-fork switch block (nil = no fork)
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DAOForkSupport bool `json:"daoForkSupport,omitempty"` // Whether the nodes supports or opposes the DAO hard-fork
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// EIP150 implements the Gas price changes (https://github.com/ethereum/EIPs/issues/150)
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EIP150Block *big.Int `json:"eip150Block,omitempty"` // EIP150 HF block (nil = no fork)
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EIP150Hash common.Hash `json:"eip150Hash,omitempty"` // EIP150 HF hash (needed for header only clients as only gas pricing changed)
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EIP155Block *big.Int `json:"eip155Block,omitempty"` // EIP155 HF block
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EIP158Block *big.Int `json:"eip158Block,omitempty"` // EIP158 HF block
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ByzantiumBlock *big.Int `json:"byzantiumBlock,omitempty"` // Byzantium switch block (nil = no fork, 0 = already on byzantium)
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ConstantinopleBlock *big.Int `json:"constantinopleBlock,omitempty"` // Constantinople switch block (nil = no fork, 0 = already activated)
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EWASMBlock *big.Int `json:"ewasmBlock,omitempty"` // EWASM switch block (nil = no fork, 0 = already activated)
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// Various consensus engines
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Ethash *EthashConfig `json:"ethash,omitempty"`
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Clique *CliqueConfig `json:"clique,omitempty"`
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}
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// EthashConfig is the consensus engine configs for proof-of-work based sealing.
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type EthashConfig struct{}
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// String implements the stringer interface, returning the consensus engine details.
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func (c *EthashConfig) String() string {
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return "ethash"
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}
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// CliqueConfig is the consensus engine configs for proof-of-authority based sealing.
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type CliqueConfig struct {
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Period uint64 `json:"period"` // Number of seconds between blocks to enforce
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Epoch uint64 `json:"epoch"` // Epoch length to reset votes and checkpoint
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}
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// String implements the stringer interface, returning the consensus engine details.
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func (c *CliqueConfig) String() string {
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return "clique"
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}
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// String implements the fmt.Stringer interface.
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func (c *ChainConfig) String() string {
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var engine interface{}
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switch {
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case c.Ethash != nil:
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engine = c.Ethash
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case c.Clique != nil:
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engine = c.Clique
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default:
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engine = "unknown"
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}
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return fmt.Sprintf("{ChainID: %v Homestead: %v DAO: %v DAOSupport: %v EIP150: %v EIP155: %v EIP158: %v Byzantium: %v Constantinople: %v Engine: %v}",
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c.ChainID,
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c.HomesteadBlock,
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c.DAOForkBlock,
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c.DAOForkSupport,
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c.EIP150Block,
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c.EIP155Block,
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c.EIP158Block,
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c.ByzantiumBlock,
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c.ConstantinopleBlock,
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engine,
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)
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}
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// IsHomestead returns whether num is either equal to the homestead block or greater.
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func (c *ChainConfig) IsHomestead(num *big.Int) bool {
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return isForked(c.HomesteadBlock, num)
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}
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// IsDAOFork returns whether num is either equal to the DAO fork block or greater.
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func (c *ChainConfig) IsDAOFork(num *big.Int) bool {
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return isForked(c.DAOForkBlock, num)
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}
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// IsEIP150 returns whether num is either equal to the EIP150 fork block or greater.
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func (c *ChainConfig) IsEIP150(num *big.Int) bool {
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return isForked(c.EIP150Block, num)
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}
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// IsEIP155 returns whether num is either equal to the EIP155 fork block or greater.
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func (c *ChainConfig) IsEIP155(num *big.Int) bool {
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return isForked(c.EIP155Block, num)
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}
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// IsEIP158 returns whether num is either equal to the EIP158 fork block or greater.
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func (c *ChainConfig) IsEIP158(num *big.Int) bool {
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return isForked(c.EIP158Block, num)
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}
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// IsByzantium returns whether num is either equal to the Byzantium fork block or greater.
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func (c *ChainConfig) IsByzantium(num *big.Int) bool {
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return isForked(c.ByzantiumBlock, num)
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}
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// IsConstantinople returns whether num is either equal to the Constantinople fork block or greater.
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func (c *ChainConfig) IsConstantinople(num *big.Int) bool {
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return isForked(c.ConstantinopleBlock, num)
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}
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// IsEWASM returns whether num represents a block number after the EWASM fork
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func (c *ChainConfig) IsEWASM(num *big.Int) bool {
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return isForked(c.EWASMBlock, num)
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}
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// GasTable returns the gas table corresponding to the current phase (homestead or homestead reprice).
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//
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// The returned GasTable's fields shouldn't, under any circumstances, be changed.
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func (c *ChainConfig) GasTable(num *big.Int) GasTable {
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if num == nil {
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return GasTableHomestead
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}
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switch {
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case c.IsConstantinople(num):
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return GasTableConstantinople
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case c.IsEIP158(num):
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return GasTableEIP158
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case c.IsEIP150(num):
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return GasTableEIP150
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default:
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return GasTableHomestead
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}
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}
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// CheckCompatible checks whether scheduled fork transitions have been imported
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// with a mismatching chain configuration.
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func (c *ChainConfig) CheckCompatible(newcfg *ChainConfig, height uint64) *ConfigCompatError {
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bhead := new(big.Int).SetUint64(height)
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// Iterate checkCompatible to find the lowest conflict.
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var lasterr *ConfigCompatError
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for {
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err := c.checkCompatible(newcfg, bhead)
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if err == nil || (lasterr != nil && err.RewindTo == lasterr.RewindTo) {
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break
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}
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lasterr = err
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bhead.SetUint64(err.RewindTo)
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}
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return lasterr
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}
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func (c *ChainConfig) checkCompatible(newcfg *ChainConfig, head *big.Int) *ConfigCompatError {
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if isForkIncompatible(c.HomesteadBlock, newcfg.HomesteadBlock, head) {
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return newCompatError("Homestead fork block", c.HomesteadBlock, newcfg.HomesteadBlock)
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}
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if isForkIncompatible(c.DAOForkBlock, newcfg.DAOForkBlock, head) {
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return newCompatError("DAO fork block", c.DAOForkBlock, newcfg.DAOForkBlock)
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}
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if c.IsDAOFork(head) && c.DAOForkSupport != newcfg.DAOForkSupport {
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return newCompatError("DAO fork support flag", c.DAOForkBlock, newcfg.DAOForkBlock)
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}
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if isForkIncompatible(c.EIP150Block, newcfg.EIP150Block, head) {
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return newCompatError("EIP150 fork block", c.EIP150Block, newcfg.EIP150Block)
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}
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if isForkIncompatible(c.EIP155Block, newcfg.EIP155Block, head) {
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return newCompatError("EIP155 fork block", c.EIP155Block, newcfg.EIP155Block)
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}
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if isForkIncompatible(c.EIP158Block, newcfg.EIP158Block, head) {
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return newCompatError("EIP158 fork block", c.EIP158Block, newcfg.EIP158Block)
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}
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if c.IsEIP158(head) && !configNumEqual(c.ChainID, newcfg.ChainID) {
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return newCompatError("EIP158 chain ID", c.EIP158Block, newcfg.EIP158Block)
|
||
|
|
}
|
||
|
|
if isForkIncompatible(c.ByzantiumBlock, newcfg.ByzantiumBlock, head) {
|
||
|
|
return newCompatError("Byzantium fork block", c.ByzantiumBlock, newcfg.ByzantiumBlock)
|
||
|
|
}
|
||
|
|
if isForkIncompatible(c.ConstantinopleBlock, newcfg.ConstantinopleBlock, head) {
|
||
|
|
return newCompatError("Constantinople fork block", c.ConstantinopleBlock, newcfg.ConstantinopleBlock)
|
||
|
|
}
|
||
|
|
if isForkIncompatible(c.EWASMBlock, newcfg.EWASMBlock, head) {
|
||
|
|
return newCompatError("ewasm fork block", c.EWASMBlock, newcfg.EWASMBlock)
|
||
|
|
}
|
||
|
|
return nil
|
||
|
|
}
|
||
|
|
|
||
|
|
// isForkIncompatible returns true if a fork scheduled at s1 cannot be rescheduled to
|
||
|
|
// block s2 because head is already past the fork.
|
||
|
|
func isForkIncompatible(s1, s2, head *big.Int) bool {
|
||
|
|
return (isForked(s1, head) || isForked(s2, head)) && !configNumEqual(s1, s2)
|
||
|
|
}
|
||
|
|
|
||
|
|
// isForked returns whether a fork scheduled at block s is active at the given head block.
|
||
|
|
func isForked(s, head *big.Int) bool {
|
||
|
|
if s == nil || head == nil {
|
||
|
|
return false
|
||
|
|
}
|
||
|
|
return s.Cmp(head) <= 0
|
||
|
|
}
|
||
|
|
|
||
|
|
func configNumEqual(x, y *big.Int) bool {
|
||
|
|
if x == nil {
|
||
|
|
return y == nil
|
||
|
|
}
|
||
|
|
if y == nil {
|
||
|
|
return x == nil
|
||
|
|
}
|
||
|
|
return x.Cmp(y) == 0
|
||
|
|
}
|
||
|
|
|
||
|
|
// ConfigCompatError is raised if the locally-stored blockchain is initialised with a
|
||
|
|
// ChainConfig that would alter the past.
|
||
|
|
type ConfigCompatError struct {
|
||
|
|
What string
|
||
|
|
// block numbers of the stored and new configurations
|
||
|
|
StoredConfig, NewConfig *big.Int
|
||
|
|
// the block number to which the local chain must be rewound to correct the error
|
||
|
|
RewindTo uint64
|
||
|
|
}
|
||
|
|
|
||
|
|
func newCompatError(what string, storedblock, newblock *big.Int) *ConfigCompatError {
|
||
|
|
var rew *big.Int
|
||
|
|
switch {
|
||
|
|
case storedblock == nil:
|
||
|
|
rew = newblock
|
||
|
|
case newblock == nil || storedblock.Cmp(newblock) < 0:
|
||
|
|
rew = storedblock
|
||
|
|
default:
|
||
|
|
rew = newblock
|
||
|
|
}
|
||
|
|
err := &ConfigCompatError{what, storedblock, newblock, 0}
|
||
|
|
if rew != nil && rew.Sign() > 0 {
|
||
|
|
err.RewindTo = rew.Uint64() - 1
|
||
|
|
}
|
||
|
|
return err
|
||
|
|
}
|
||
|
|
|
||
|
|
func (err *ConfigCompatError) Error() string {
|
||
|
|
return fmt.Sprintf("mismatching %s in database (have %d, want %d, rewindto %d)", err.What, err.StoredConfig, err.NewConfig, err.RewindTo)
|
||
|
|
}
|
||
|
|
|
||
|
|
// Rules wraps ChainConfig and is merely syntactic sugar or can be used for functions
|
||
|
|
// that do not have or require information about the block.
|
||
|
|
//
|
||
|
|
// Rules is a one time interface meaning that it shouldn't be used in between transition
|
||
|
|
// phases.
|
||
|
|
type Rules struct {
|
||
|
|
ChainID *big.Int
|
||
|
|
IsHomestead, IsEIP150, IsEIP155, IsEIP158 bool
|
||
|
|
IsByzantium, IsConstantinople bool
|
||
|
|
}
|
||
|
|
|
||
|
|
// Rules ensures c's ChainID is not nil.
|
||
|
|
func (c *ChainConfig) Rules(num *big.Int) Rules {
|
||
|
|
chainID := c.ChainID
|
||
|
|
if chainID == nil {
|
||
|
|
chainID = new(big.Int)
|
||
|
|
}
|
||
|
|
return Rules{
|
||
|
|
ChainID: new(big.Int).Set(chainID),
|
||
|
|
IsHomestead: c.IsHomestead(num),
|
||
|
|
IsEIP150: c.IsEIP150(num),
|
||
|
|
IsEIP155: c.IsEIP155(num),
|
||
|
|
IsEIP158: c.IsEIP158(num),
|
||
|
|
IsByzantium: c.IsByzantium(num),
|
||
|
|
IsConstantinople: c.IsConstantinople(num),
|
||
|
|
}
|
||
|
|
}
|