// Copyright 2016 The go-ethereum Authors // This file is part of the go-ethereum library. // // The go-ethereum library is free software: you can redistribute it and/or modify // it under the terms of the GNU Lesser General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // // The go-ethereum library 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 Lesser General Public License for more details. // // You should have received a copy of the GNU Lesser General Public License // along with the go-ethereum library. If not, see . package params import ( "fmt" "math/big" "github.com/dexon-foundation/dexon/common" "github.com/dexon-foundation/dexon/common/math" ) // Genesis hashes to enforce below configs on. var ( MainnetGenesisHash = common.HexToHash("0x075918a1da88f5d7bed21362e22b780d6b04739b04c7fd0aa25d33b86f56a87f") TestnetGenesisHash = common.HexToHash("0x4e8e72e73b70f096f31910f0f9b930f65291fcff8b344c93dada282df90bb99f") TaipeiGenesisHash = common.HexToHash("0x8c074f5f0d434e23feda0ba238a8915a2457c6d169a14020afc05e0f7ee812e3") YilanGenesisHash = common.HexToHash("0x6d4bc5a73bc2b665b23a06bed9d16c5239ca9598a2cbb662677d0329a0819a2d") ) var ( // MainnetChainConfig is the chain parameters to run a node on the main network. MainnetChainConfig = &ChainConfig{ ChainID: big.NewInt(237), DMoment: 0, HomesteadBlock: big.NewInt(0), DAOForkBlock: big.NewInt(0), DAOForkSupport: true, EIP150Block: big.NewInt(0), EIP150Hash: common.HexToHash("0x0000000000000000000000000000000000000000000000000000000000000000"), EIP155Block: big.NewInt(0), EIP158Block: big.NewInt(0), ByzantiumBlock: big.NewInt(0), ConstantinopleBlock: big.NewInt(0), PetersburgBlock: big.NewInt(0), Dexcon: &DexconConfig{ GenesisCRSText: "In DEXON, we trust.", Owner: common.HexToAddress("BF8C48A620bacc46907f9B89732D25E47A2D7Cf7"), MinStake: new(big.Int).Mul(big.NewInt(1e18), big.NewInt(1e6)), LockupPeriod: 86400 * 3 * 1000, MiningVelocity: 0.1875, NextHalvingSupply: new(big.Int).Mul(big.NewInt(1e18), big.NewInt(2.5e9)), LastHalvedAmount: new(big.Int).Mul(big.NewInt(1e18), big.NewInt(1.5e9)), MinGasPrice: new(big.Int).Mul(big.NewInt(1e9), big.NewInt(1)), BlockGasLimit: 40000000, LambdaBA: 250, LambdaDKG: 2500, NotarySetSize: 4, DKGSetSize: 4, RoundLength: 600, MinBlockInterval: 1000, FineValues: []*big.Int{ new(big.Int).Mul(big.NewInt(1e18), big.NewInt(1e4)), new(big.Int).Mul(big.NewInt(1e18), big.NewInt(1e4)), new(big.Int).Mul(big.NewInt(1e18), big.NewInt(1e5)), }, }, Recovery: &RecoveryConfig{ Contract: common.HexToAddress("0xcb4bb8ae26b2ebe5a1e2e8d5236020f33ffb2294"), Timeout: 120, Confirmation: 5, }, } // MainnetTrustedCheckpoint contains the light client trusted checkpoint for the main network. MainnetTrustedCheckpoint = &TrustedCheckpoint{ Name: "mainnet", SectionIndex: 216, SectionHead: common.HexToHash("0xae3e551c8d60d06fd411a8e6008e90625d3bb0cbbf664b65d5ed90b318553541"), CHTRoot: common.HexToHash("0xeea7d2ab3545a37deecc66fc43c9556ae337c3ea1c6893e401428207bdb8e434"), BloomRoot: common.HexToHash("0xb0d4176d160d67b99a9f963281e52bce0583a566b74b4497fe3ed24ae04004ff"), } // TestnetChainConfig contains the chain parameters to run a node on the Taiwan test network. TestnetChainConfig = &ChainConfig{ ChainID: big.NewInt(238), DMoment: 1548661200, HomesteadBlock: big.NewInt(0), DAOForkBlock: nil, DAOForkSupport: true, EIP150Block: big.NewInt(0), EIP155Block: big.NewInt(0), EIP158Block: big.NewInt(0), ByzantiumBlock: big.NewInt(0), ConstantinopleBlock: big.NewInt(0), PetersburgBlock: big.NewInt(0), Dexcon: &DexconConfig{ GenesisCRSText: "In DEXON, we trust.", Owner: common.HexToAddress("BF8C48A620bacc46907f9B89732D25E47A2D7Cf7"), MinStake: new(big.Int).Mul(big.NewInt(1e18), big.NewInt(1e6)), LockupPeriod: 86400 * 3 * 1000, MiningVelocity: 0.1875, NextHalvingSupply: new(big.Int).Mul(big.NewInt(1e18), big.NewInt(1.8e8)), LastHalvedAmount: new(big.Int).Mul(big.NewInt(1e18), big.NewInt(1.6e7)), MinGasPrice: new(big.Int).Mul(big.NewInt(1e9), big.NewInt(1)), BlockGasLimit: 80000000, LambdaBA: 250, LambdaDKG: 10000, NotarySetSize: 24, DKGSetSize: 24, RoundLength: 1200, MinBlockInterval: 1000, FineValues: []*big.Int{ new(big.Int).Mul(big.NewInt(1e18), big.NewInt(1e4)), new(big.Int).Mul(big.NewInt(1e18), big.NewInt(1e4)), new(big.Int).Mul(big.NewInt(1e18), big.NewInt(1e5)), }, }, Recovery: &RecoveryConfig{ Contract: common.HexToAddress("0x4ebe3d13ab18b30d815711b7a33ef1226777b66d"), Timeout: 120, Confirmation: 5, }, } // TaipeiChainConfig contains the chain parameters to run a node on the Taipei test network. TaipeiChainConfig = &ChainConfig{ ChainID: big.NewInt(239), DMoment: 1548556500, HomesteadBlock: big.NewInt(0), DAOForkBlock: nil, DAOForkSupport: true, EIP150Block: big.NewInt(0), EIP155Block: big.NewInt(0), EIP158Block: big.NewInt(0), ByzantiumBlock: big.NewInt(0), ConstantinopleBlock: big.NewInt(0), PetersburgBlock: big.NewInt(0), Dexcon: &DexconConfig{ GenesisCRSText: "In DEXON, we trust.", Owner: common.HexToAddress("BF8C48A620bacc46907f9B89732D25E47A2D7Cf7"), MinStake: new(big.Int).Mul(big.NewInt(1e18), big.NewInt(1e6)), LockupPeriod: 86400 * 3 * 1000, MiningVelocity: 0.1875, NextHalvingSupply: new(big.Int).Mul(big.NewInt(1e18), big.NewInt(1.8e8)), LastHalvedAmount: new(big.Int).Mul(big.NewInt(1e18), big.NewInt(1.6e7)), MinGasPrice: new(big.Int).Mul(big.NewInt(1e9), big.NewInt(1)), BlockGasLimit: 21000 * 5000, LambdaBA: 250, LambdaDKG: 10000, NotarySetSize: 24, DKGSetSize: 24, RoundLength: 1200, MinBlockInterval: 500, FineValues: []*big.Int{ new(big.Int).Mul(big.NewInt(1e18), big.NewInt(1e4)), new(big.Int).Mul(big.NewInt(1e18), big.NewInt(1e4)), new(big.Int).Mul(big.NewInt(1e18), big.NewInt(1e5)), }, }, Recovery: &RecoveryConfig{ Contract: common.HexToAddress("0xac86ab80ab27007801f36f6622fbe0a9432291a2"), Timeout: 120, Confirmation: 1, }, } // TestnetTrustedCheckpoint contains the light client trusted checkpoint for the Ropsten test network. TestnetTrustedCheckpoint = &TrustedCheckpoint{ Name: "testnet", SectionIndex: 148, SectionHead: common.HexToHash("0x4d3181bedb6aa96a6f3efa866c71f7802400d0fb4a6906946c453630d850efc0"), CHTRoot: common.HexToHash("0x25df2f9d63a5f84b2852988f0f0f7af5a7877da061c11b85c812780b5a27a5ec"), BloomRoot: common.HexToHash("0x0584834e5222471a06c669d210e302ca602780eaaddd04634fd65471c2a91419"), } // YilanChainConfig contains the chain parameters to run a node on the Yilan test network. YilanChainConfig = &ChainConfig{ ChainID: big.NewInt(240), DMoment: 1550802900, HomesteadBlock: big.NewInt(0), DAOForkBlock: nil, DAOForkSupport: true, EIP150Block: big.NewInt(0), EIP155Block: big.NewInt(0), EIP158Block: big.NewInt(0), ByzantiumBlock: big.NewInt(0), ConstantinopleBlock: big.NewInt(0), Dexcon: &DexconConfig{ GenesisCRSText: "In DEXON, we trust, at Yilan", Owner: common.HexToAddress("BF8C48A620bacc46907f9B89732D25E47A2D7Cf7"), MinStake: new(big.Int).Mul(big.NewInt(1e18), big.NewInt(1e6)), LockupPeriod: 86400 * 3 * 1000, MiningVelocity: 0.1875, NextHalvingSupply: new(big.Int).Mul(big.NewInt(1e18), big.NewInt(2e7)), LastHalvedAmount: new(big.Int).Mul(big.NewInt(1e18), big.NewInt(4e6)), MinGasPrice: new(big.Int).Mul(big.NewInt(1e9), big.NewInt(1)), BlockGasLimit: 21000 * 5000, LambdaBA: 250, LambdaDKG: 10000, NotarySetSize: 4, DKGSetSize: 4, RoundLength: 1200, MinBlockInterval: 500, FineValues: []*big.Int{ new(big.Int).Mul(big.NewInt(1e18), big.NewInt(1e4)), new(big.Int).Mul(big.NewInt(1e18), big.NewInt(1e4)), new(big.Int).Mul(big.NewInt(1e18), big.NewInt(1e5)), }, }, Recovery: &RecoveryConfig{ Contract: common.HexToAddress("0x3828134ba7a0629fd52067b80fe696f400eb83dc"), Timeout: 120, Confirmation: 1, }, } // AllEthashProtocolChanges contains every protocol change (EIPs) introduced // and accepted by the Ethereum core developers into the Ethash consensus. // // This configuration is intentionally not using keyed fields to force anyone // adding flags to the config to also have to set these fields. AllEthashProtocolChanges = &ChainConfig{big.NewInt(1337), 0, big.NewInt(0), nil, false, big.NewInt(0), common.Hash{}, big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), nil, new(EthashConfig), nil, nil, nil} // AllCliqueProtocolChanges contains every protocol change (EIPs) introduced // and accepted by the Ethereum core developers into the Clique consensus. // // This configuration is intentionally not using keyed fields to force anyone // adding flags to the config to also have to set these fields. AllCliqueProtocolChanges = &ChainConfig{big.NewInt(1337), 0, big.NewInt(0), nil, false, big.NewInt(0), common.Hash{}, big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), nil, nil, &CliqueConfig{Period: 0, Epoch: 30000}, nil, nil} AllDexconProtocolChanges = &ChainConfig{big.NewInt(1337), 0, big.NewInt(0), nil, false, big.NewInt(0), common.Hash{}, big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), nil, nil, nil, new(DexconConfig), new(RecoveryConfig)} TestChainConfig = &ChainConfig{big.NewInt(1), 0, big.NewInt(0), nil, false, big.NewInt(0), common.Hash{}, big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), nil, new(EthashConfig), nil, nil, nil} TestRules = TestChainConfig.Rules(new(big.Int)) // Ethereum MainnetChainConfig is the chain parameters to run a node on the main network. EthereumMainnetChainConfig = &ChainConfig{ ChainID: big.NewInt(1), DMoment: 0, HomesteadBlock: big.NewInt(1150000), DAOForkBlock: big.NewInt(1920000), DAOForkSupport: true, EIP150Block: big.NewInt(2463000), EIP150Hash: common.HexToHash("0x2086799aeebeae135c246c65021c82b4e15a2c451340993aacfd2751886514f0"), EIP155Block: big.NewInt(2675000), EIP158Block: big.NewInt(2675000), ByzantiumBlock: big.NewInt(4370000), ConstantinopleBlock: nil, Ethash: new(EthashConfig), } // Ethereum TestnetChainConfig contains the chain parameters to run a node on the Ropsten test network. EthereumTestnetChainConfig = &ChainConfig{ ChainID: big.NewInt(3), DMoment: 0, HomesteadBlock: big.NewInt(0), DAOForkBlock: nil, DAOForkSupport: true, EIP150Block: big.NewInt(0), EIP150Hash: common.HexToHash("0x41941023680923e0fe4d74a34bdac8141f2540e3ae90623718e47d66d1ca4a2d"), EIP155Block: big.NewInt(10), EIP158Block: big.NewInt(10), ByzantiumBlock: big.NewInt(1700000), ConstantinopleBlock: big.NewInt(4230000), Ethash: new(EthashConfig), } ) // TrustedCheckpoint represents a set of post-processed trie roots (CHT and // BloomTrie) associated with the appropriate section index and head hash. It is // used to start light syncing from this checkpoint and avoid downloading the // entire header chain while still being able to securely access old headers/logs. type TrustedCheckpoint struct { Name string `json:"-"` SectionIndex uint64 `json:"sectionIndex"` SectionHead common.Hash `json:"sectionHead"` CHTRoot common.Hash `json:"chtRoot"` BloomRoot common.Hash `json:"bloomRoot"` } // ChainConfig is the core config which determines the blockchain settings. // // ChainConfig is stored in the database on a per block basis. This means // that any network, identified by its genesis block, can have its own // set of configuration options. type ChainConfig struct { ChainID *big.Int `json:"chainId"` // chainId identifies the current chain and is used for replay protection DMoment uint64 `json:"dMoment"` // dMoment which indicate the starting time of the network HomesteadBlock *big.Int `json:"homesteadBlock,omitempty"` // Homestead switch block (nil = no fork, 0 = already homestead) DAOForkBlock *big.Int `json:"daoForkBlock,omitempty"` // TheDAO hard-fork switch block (nil = no fork) DAOForkSupport bool `json:"daoForkSupport,omitempty"` // Whether the nodes supports or opposes the DAO hard-fork // EIP150 implements the Gas price changes (https://github.com/ethereum/EIPs/issues/150) EIP150Block *big.Int `json:"eip150Block,omitempty"` // EIP150 HF block (nil = no fork) EIP150Hash common.Hash `json:"eip150Hash,omitempty"` // EIP150 HF hash (needed for header only clients as only gas pricing changed) EIP155Block *big.Int `json:"eip155Block,omitempty"` // EIP155 HF block EIP158Block *big.Int `json:"eip158Block,omitempty"` // EIP158 HF block ByzantiumBlock *big.Int `json:"byzantiumBlock,omitempty"` // Byzantium switch block (nil = no fork, 0 = already on byzantium) ConstantinopleBlock *big.Int `json:"constantinopleBlock,omitempty"` // Constantinople switch block (nil = no fork, 0 = already activated) PetersburgBlock *big.Int `json:"petersburgBlock,omitempty"` // Petersburg switch block (nil = same as Constantinople) EWASMBlock *big.Int `json:"ewasmBlock,omitempty"` // EWASM switch block (nil = no fork, 0 = already activated) // Various consensus engines Ethash *EthashConfig `json:"ethash,omitempty"` Clique *CliqueConfig `json:"clique,omitempty"` Dexcon *DexconConfig `json:"dexcon,omitempty"` // Dexcon Recovery Recovery *RecoveryConfig `json:"recovery,omitempty"` } // EthashConfig is the consensus engine configs for proof-of-work based sealing. type EthashConfig struct{} // String implements the stringer interface, returning the consensus engine details. func (c *EthashConfig) String() string { return "ethash" } // CliqueConfig is the consensus engine configs for proof-of-authority based sealing. type CliqueConfig struct { Period uint64 `json:"period"` // Number of seconds between blocks to enforce Epoch uint64 `json:"epoch"` // Epoch length to reset votes and checkpoint } // String implements the stringer interface, returning the consensus engine details. func (c *CliqueConfig) String() string { return "clique" } //go:generate gencodec -type DexconConfig -field-override dexconConfigSpecMarshaling -out gen_dexcon_config.go // DexconConfig is the consensus engine configs for DEXON consensus. type DexconConfig struct { GenesisCRSText string `json:"genesisCRSText"` Owner common.Address `json:"owner"` MinStake *big.Int `json:"minStake"` LockupPeriod uint64 `json:"lockupPeriod"` MiningVelocity float32 `json:"miningVelocity"` NextHalvingSupply *big.Int `json:"nextHalvingSupply"` LastHalvedAmount *big.Int `json:"lastHalvedAmount"` MinGasPrice *big.Int `json:"minGasPrice"` BlockGasLimit uint64 `json:"blockGasLimit"` LambdaBA uint64 `json:"lambdaBA"` LambdaDKG uint64 `json:"lambdaDKG"` NotarySetSize uint32 `json:"notarySetSize"` DKGSetSize uint32 `json:"dkgSetSize"` RoundLength uint64 `json:"roundLength"` MinBlockInterval uint64 `json:"minBlockInterval"` FineValues []*big.Int `json:"fineValues"` } type dexconConfigSpecMarshaling struct { MinStake *math.HexOrDecimal256 NextHalvingSupply *math.HexOrDecimal256 LastHalvedAmount *math.HexOrDecimal256 MinGasPrice *math.HexOrDecimal256 FineValues []*math.HexOrDecimal256 } // String implements the stringer interface, returning the consensus engine details. func (d *DexconConfig) String() string { return fmt.Sprintf("{GenesisCRSText: %v Owner: %v MinStake: %v LockupPeriod: %v MiningVelocity: %v NextHalvingSupply: %v LastHalvedAmount: %v MinGasPrice: %v BlockGasLimit: %v LambdaBA: %v LambdaDKG: %v NotarySetSize: %v DKGSetSize: %v RoundLength: %v MinBlockInterval: %v FineValues: %v}", d.GenesisCRSText, d.Owner, d.MinStake, d.LockupPeriod, d.MiningVelocity, d.NextHalvingSupply, d.LastHalvedAmount, d.MinGasPrice, d.BlockGasLimit, d.LambdaBA, d.LambdaDKG, d.NotarySetSize, d.DKGSetSize, d.RoundLength, d.MinBlockInterval, d.FineValues, ) } type RecoveryConfig struct { Contract common.Address `json:"contract"` Timeout int `json:"timeout"` Confirmation int `json:"confirmation"` } // String implements the fmt.Stringer interface. func (c *ChainConfig) String() string { var engine interface{} switch { case c.Ethash != nil: engine = c.Ethash case c.Clique != nil: engine = c.Clique default: engine = "unknown" } return fmt.Sprintf("{ChainID: %v Homestead: %v DAO: %v DAOSupport: %v EIP150: %v EIP155: %v EIP158: %v Byzantium: %v Constantinople: %v ConstantinopleFix: %v Engine: %v}", c.ChainID, c.HomesteadBlock, c.DAOForkBlock, c.DAOForkSupport, c.EIP150Block, c.EIP155Block, c.EIP158Block, c.ByzantiumBlock, c.ConstantinopleBlock, c.PetersburgBlock, engine, ) } // IsHomestead returns whether num is either equal to the homestead block or greater. func (c *ChainConfig) IsHomestead(num *big.Int) bool { return isForked(c.HomesteadBlock, num) } // IsDAOFork returns whether num is either equal to the DAO fork block or greater. func (c *ChainConfig) IsDAOFork(num *big.Int) bool { return isForked(c.DAOForkBlock, num) } // IsEIP150 returns whether num is either equal to the EIP150 fork block or greater. func (c *ChainConfig) IsEIP150(num *big.Int) bool { return isForked(c.EIP150Block, num) } // IsEIP155 returns whether num is either equal to the EIP155 fork block or greater. func (c *ChainConfig) IsEIP155(num *big.Int) bool { return isForked(c.EIP155Block, num) } // IsEIP158 returns whether num is either equal to the EIP158 fork block or greater. func (c *ChainConfig) IsEIP158(num *big.Int) bool { return isForked(c.EIP158Block, num) } // IsByzantium returns whether num is either equal to the Byzantium fork block or greater. func (c *ChainConfig) IsByzantium(num *big.Int) bool { return isForked(c.ByzantiumBlock, num) } // IsConstantinople returns whether num is either equal to the Constantinople fork block or greater. func (c *ChainConfig) IsConstantinople(num *big.Int) bool { return isForked(c.ConstantinopleBlock, num) } // IsPetersburg returns whether num is either // - equal to or greater than the PetersburgBlock fork block, // - OR is nil, and Constantinople is active func (c *ChainConfig) IsPetersburg(num *big.Int) bool { return isForked(c.PetersburgBlock, num) || c.PetersburgBlock == nil && isForked(c.ConstantinopleBlock, num) } // IsEWASM returns whether num represents a block number after the EWASM fork func (c *ChainConfig) IsEWASM(num *big.Int) bool { return isForked(c.EWASMBlock, num) } // GasTable returns the gas table corresponding to the current phase (homestead or homestead reprice). // // The returned GasTable's fields shouldn't, under any circumstances, be changed. func (c *ChainConfig) GasTable(num *big.Int) GasTable { if num == nil { return GasTableHomestead } switch { case c.IsConstantinople(num): return GasTableConstantinople case c.IsEIP158(num): return GasTableEIP158 case c.IsEIP150(num): return GasTableEIP150 default: return GasTableHomestead } } // CheckCompatible checks whether scheduled fork transitions have been imported // with a mismatching chain configuration. func (c *ChainConfig) CheckCompatible(newcfg *ChainConfig, height uint64) *ConfigCompatError { bhead := new(big.Int).SetUint64(height) // Iterate checkCompatible to find the lowest conflict. var lasterr *ConfigCompatError for { err := c.checkCompatible(newcfg, bhead) if err == nil || (lasterr != nil && err.RewindTo == lasterr.RewindTo) { break } lasterr = err bhead.SetUint64(err.RewindTo) } return lasterr } func (c *ChainConfig) checkCompatible(newcfg *ChainConfig, head *big.Int) *ConfigCompatError { if isForkIncompatible(c.HomesteadBlock, newcfg.HomesteadBlock, head) { return newCompatError("Homestead fork block", c.HomesteadBlock, newcfg.HomesteadBlock) } if isForkIncompatible(c.DAOForkBlock, newcfg.DAOForkBlock, head) { return newCompatError("DAO fork block", c.DAOForkBlock, newcfg.DAOForkBlock) } if c.IsDAOFork(head) && c.DAOForkSupport != newcfg.DAOForkSupport { return newCompatError("DAO fork support flag", c.DAOForkBlock, newcfg.DAOForkBlock) } if isForkIncompatible(c.EIP150Block, newcfg.EIP150Block, head) { return newCompatError("EIP150 fork block", c.EIP150Block, newcfg.EIP150Block) } if isForkIncompatible(c.EIP155Block, newcfg.EIP155Block, head) { return newCompatError("EIP155 fork block", c.EIP155Block, newcfg.EIP155Block) } if isForkIncompatible(c.EIP158Block, newcfg.EIP158Block, head) { return newCompatError("EIP158 fork block", c.EIP158Block, newcfg.EIP158Block) } if c.IsEIP158(head) && !configNumEqual(c.ChainID, newcfg.ChainID) { 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.PetersburgBlock, newcfg.PetersburgBlock, head) { return newCompatError("ConstantinopleFix fork block", c.PetersburgBlock, newcfg.PetersburgBlock) } 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, IsPetersburg 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), IsPetersburg: c.IsPetersburg(num), } }