From 84aab38b82b6304f65a0d6df74269cb3998dba53 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?P=C3=A9ter=20Szil=C3=A1gyi?= Date: Thu, 7 Jul 2016 16:04:34 +0300 Subject: [PATCH 1/3] cmd, core, eth, params: implement flags to control dao fork blocks --- cmd/geth/dao_test.go | 306 +++++++++++++++++++++++++++++++++++++++++++ cmd/geth/main.go | 9 +- cmd/geth/usage.go | 1 - cmd/utils/flags.go | 76 ++++++----- core/config.go | 4 +- eth/backend.go | 2 + params/util.go | 2 + 7 files changed, 354 insertions(+), 46 deletions(-) create mode 100644 cmd/geth/dao_test.go diff --git a/cmd/geth/dao_test.go b/cmd/geth/dao_test.go new file mode 100644 index 0000000000..fd6831c15c --- /dev/null +++ b/cmd/geth/dao_test.go @@ -0,0 +1,306 @@ +// Copyright 2016 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 . + +package main + +import ( + "io/ioutil" + "math/big" + "os" + "path/filepath" + "testing" + + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/core" + "github.com/ethereum/go-ethereum/ethdb" + "github.com/ethereum/go-ethereum/params" +) + +var daoNoForkGenesis = `{ + "alloc" : {}, + "coinbase" : "0x0000000000000000000000000000000000000000", + "difficulty" : "0x20000", + "extraData" : "", + "gasLimit" : "0x2fefd8", + "nonce" : "0x0000000000000042", + "mixhash" : "0x0000000000000000000000000000000000000000000000000000000000000000", + "parentHash" : "0x0000000000000000000000000000000000000000000000000000000000000000", + "timestamp" : "0x00" +}` +var daoNoForkGenesisHash = common.HexToHash("5e1fc79cb4ffa4739177b5408045cd5d51c6cf766133f23f7cd72ee1f8d790e0") + +var daoProForkGenesis = `{ + "alloc" : {}, + "coinbase" : "0x0000000000000000000000000000000000000000", + "difficulty" : "0x20000", + "extraData" : "", + "gasLimit" : "0x2fefd8", + "nonce" : "0x0000000000000043", + "mixhash" : "0x0000000000000000000000000000000000000000000000000000000000000000", + "parentHash" : "0x0000000000000000000000000000000000000000000000000000000000000000", + "timestamp" : "0x00", + "config" : { + "daoForkBlock": 314 + } +}` +var daoProForkGenesisHash = common.HexToHash("c80f3c1c3d81ae6d8ea59edf35d3e4b723e4c8684ec71fdb6d4715e3f8add237") +var daoProForkBlock = big.NewInt(314) + +// Tests that creating a new node to with or without the DAO fork flag will correctly +// set the genesis block but with DAO support explicitly set or unset in the chain +// config in the database. +func TestDAOSupportMainnet(t *testing.T) { + testDAOForkBlockNewChain(t, false, "", true, params.MainNetDAOForkBlock) +} +func TestDAOSupportTestnet(t *testing.T) { + testDAOForkBlockNewChain(t, true, "", true, params.TestNetDAOForkBlock) +} +func TestDAOSupportPrivnet(t *testing.T) { + testDAOForkBlockNewChain(t, false, daoProForkGenesis, false, daoProForkBlock) +} +func TestDAONoSupportMainnet(t *testing.T) { + testDAOForkBlockNewChain(t, false, "", false, nil) +} +func TestDAONoSupportTestnet(t *testing.T) { + testDAOForkBlockNewChain(t, true, "", false, nil) +} +func TestDAONoSupportPrivnet(t *testing.T) { + testDAOForkBlockNewChain(t, false, daoNoForkGenesis, false, nil) +} + +func testDAOForkBlockNewChain(t *testing.T, testnet bool, genesis string, fork bool, expect *big.Int) { + // Create a temporary data directory to use and inspect later + datadir := tmpdir(t) + defer os.RemoveAll(datadir) + + // Start a Geth instance with the requested flags set and immediately terminate + if genesis != "" { + json := filepath.Join(datadir, "genesis.json") + if err := ioutil.WriteFile(json, []byte(genesis), 0600); err != nil { + t.Fatalf("failed to write genesis file: %v", err) + } + runGeth(t, "--datadir", datadir, "init", json).cmd.Wait() + } + execDAOGeth(t, datadir, testnet, fork, false) + + // Retrieve the DAO config flag from the database + path := filepath.Join(datadir, "chaindata") + if testnet { + path = filepath.Join(datadir, "testnet", "chaindata") + } + db, err := ethdb.NewLDBDatabase(path, 0, 0) + if err != nil { + t.Fatalf("failed to open test database: %v", err) + } + defer db.Close() + + genesisHash := common.HexToHash("0xd4e56740f876aef8c010b86a40d5f56745a118d0906a34e69aec8c0db1cb8fa3") + if testnet { + genesisHash = common.HexToHash("0x0cd786a2425d16f152c658316c423e6ce1181e15c3295826d7c9904cba9ce303") + } else if genesis == daoNoForkGenesis { + genesisHash = daoNoForkGenesisHash + } else if genesis == daoProForkGenesis { + genesisHash = daoProForkGenesisHash + } + config, err := core.GetChainConfig(db, genesisHash) + if err != nil { + t.Fatalf("failed to retrieve chain config: %v", err) + } + // Validate the DAO hard-fork block number against the expected value + if config.DAOForkBlock == nil { + if expect != nil { + t.Fatalf("dao hard-fork block mismatch: have nil, want %v", expect) + } + } else if config.DAOForkBlock.Cmp(expect) != 0 { + t.Fatalf("dao hard-fork block mismatch: have %v, want %v", config.DAOForkBlock, expect) + } +} + +// Tests that starting up an already existing node with various DAO fork override +// flags correctly changes the chain configs in the database. +func TestDAODefaultMainnet(t *testing.T) { + testDAOForkBlockOldChain(t, false, "", false, false, false, false, nil) +} +func TestDAOStartSupportMainnet(t *testing.T) { + testDAOForkBlockOldChain(t, false, "", false, true, false, false, params.MainNetDAOForkBlock) +} +func TestDAOContinueExplicitSupportMainnet(t *testing.T) { + testDAOForkBlockOldChain(t, false, "", true, true, false, false, params.MainNetDAOForkBlock) +} +func TestDAOContinueImplicitSupportMainnet(t *testing.T) { + testDAOForkBlockOldChain(t, false, "", true, false, false, false, params.MainNetDAOForkBlock) +} +func TestDAOSwitchSupportMainnet(t *testing.T) { + testDAOForkBlockOldChain(t, false, "", false, true, true, false, params.MainNetDAOForkBlock) +} +func TestDAOStartOpposeMainnet(t *testing.T) { + testDAOForkBlockOldChain(t, false, "", false, false, false, true, nil) +} +func TestDAOContinueExplicitOpposeMainnet(t *testing.T) { + testDAOForkBlockOldChain(t, false, "", false, false, true, true, nil) +} +func TestDAOContinueImplicitOpposeMainnet(t *testing.T) { + testDAOForkBlockOldChain(t, false, "", false, false, true, false, nil) +} +func TestDAOSwitchOpposeMainnet(t *testing.T) { + testDAOForkBlockOldChain(t, false, "", true, false, false, true, nil) +} +func TestDAODefaultTestnet(t *testing.T) { + testDAOForkBlockOldChain(t, true, "", false, false, false, false, nil) +} +func TestDAOStartSupportTestnet(t *testing.T) { + testDAOForkBlockOldChain(t, true, "", false, true, false, false, params.TestNetDAOForkBlock) +} +func TestDAOContinueExplicitSupportTestnet(t *testing.T) { + testDAOForkBlockOldChain(t, true, "", true, true, false, false, params.TestNetDAOForkBlock) +} +func TestDAOContinueImplicitSupportTestnet(t *testing.T) { + testDAOForkBlockOldChain(t, true, "", true, false, false, false, params.TestNetDAOForkBlock) +} +func TestDAOSwitchSupportTestnet(t *testing.T) { + testDAOForkBlockOldChain(t, true, "", false, true, true, false, params.TestNetDAOForkBlock) +} +func TestDAOStartOpposeTestnet(t *testing.T) { + testDAOForkBlockOldChain(t, true, "", false, false, false, true, nil) +} +func TestDAOContinueExplicitOpposeTestnet(t *testing.T) { + testDAOForkBlockOldChain(t, true, "", false, false, true, true, nil) +} +func TestDAOContinueImplicitOpposeTestnet(t *testing.T) { + testDAOForkBlockOldChain(t, true, "", false, false, true, false, nil) +} +func TestDAOSwitchOpposeTestnet(t *testing.T) { + testDAOForkBlockOldChain(t, true, "", true, false, false, true, nil) +} +func TestDAODefaultPrivnet(t *testing.T) { + testDAOForkBlockOldChain(t, false, daoNoForkGenesis, false, false, false, false, nil) +} +func TestDAOStartSupportConPrivnet(t *testing.T) { + testDAOForkBlockOldChain(t, false, daoNoForkGenesis, false, true, false, false, params.MainNetDAOForkBlock) +} +func TestDAOContinueExplicitSupportConPrivnet(t *testing.T) { + testDAOForkBlockOldChain(t, false, daoNoForkGenesis, true, true, false, false, params.MainNetDAOForkBlock) +} +func TestDAOContinueImplicitSupportConPrivnet(t *testing.T) { + testDAOForkBlockOldChain(t, false, daoNoForkGenesis, true, false, false, false, params.MainNetDAOForkBlock) +} +func TestDAOSwitchSupportConPrivnet(t *testing.T) { + testDAOForkBlockOldChain(t, false, daoNoForkGenesis, false, true, true, false, params.MainNetDAOForkBlock) +} +func TestDAOStartOpposeConPrivnet(t *testing.T) { + testDAOForkBlockOldChain(t, false, daoNoForkGenesis, false, false, false, true, nil) +} +func TestDAOContinueExplicitOpposeConPrivnet(t *testing.T) { + testDAOForkBlockOldChain(t, false, daoNoForkGenesis, false, false, true, true, nil) +} +func TestDAOContinueImplicitOpposeConPrivnet(t *testing.T) { + testDAOForkBlockOldChain(t, false, daoNoForkGenesis, false, false, true, false, nil) +} +func TestDAOSwitchOpposeConPrivnet(t *testing.T) { + testDAOForkBlockOldChain(t, false, daoNoForkGenesis, true, false, false, true, nil) +} +func TestDAODefaultProPrivnet(t *testing.T) { + testDAOForkBlockOldChain(t, false, daoProForkGenesis, false, false, false, false, daoProForkBlock) +} +func TestDAOStartSupportProPrivnet(t *testing.T) { + testDAOForkBlockOldChain(t, false, daoProForkGenesis, false, true, false, false, daoProForkBlock) +} +func TestDAOContinueExplicitSupportProPrivnet(t *testing.T) { + testDAOForkBlockOldChain(t, false, daoProForkGenesis, true, true, false, false, daoProForkBlock) +} +func TestDAOContinueImplicitSupportProPrivnet(t *testing.T) { + testDAOForkBlockOldChain(t, false, daoProForkGenesis, true, false, false, false, daoProForkBlock) +} +func TestDAOSwitchSupportProPrivnet(t *testing.T) { + testDAOForkBlockOldChain(t, false, daoProForkGenesis, false, true, true, false, params.MainNetDAOForkBlock) +} +func TestDAOStartOpposeProPrivnet(t *testing.T) { + testDAOForkBlockOldChain(t, false, daoProForkGenesis, false, false, false, true, nil) +} +func TestDAOContinueExplicitOpposeProPrivnet(t *testing.T) { + testDAOForkBlockOldChain(t, false, daoProForkGenesis, false, false, true, true, nil) +} +func TestDAOContinueImplicitOpposeProPrivnet(t *testing.T) { + testDAOForkBlockOldChain(t, false, daoProForkGenesis, false, false, true, false, nil) +} +func TestDAOSwitchOpposeProPrivnet(t *testing.T) { + testDAOForkBlockOldChain(t, false, daoProForkGenesis, true, false, false, true, nil) +} + +func testDAOForkBlockOldChain(t *testing.T, testnet bool, genesis string, oldSupport, newSupport, oldOppose, newOppose bool, expect *big.Int) { + // Create a temporary data directory to use and inspect later + datadir := tmpdir(t) + defer os.RemoveAll(datadir) + + // Cycle two Geth instances, possibly changing fork support in between + if genesis != "" { + json := filepath.Join(datadir, "genesis.json") + if err := ioutil.WriteFile(json, []byte(genesis), 0600); err != nil { + t.Fatalf("failed to write genesis file: %v", err) + } + runGeth(t, "--datadir", datadir, "init", json).cmd.Wait() + } + execDAOGeth(t, datadir, testnet, oldSupport, oldOppose) + execDAOGeth(t, datadir, testnet, newSupport, newOppose) + + // Retrieve the DAO config flag from the database + path := filepath.Join(datadir, "chaindata") + if testnet { + path = filepath.Join(datadir, "testnet", "chaindata") + } + db, err := ethdb.NewLDBDatabase(path, 0, 0) + if err != nil { + t.Fatalf("failed to open test database: %v", err) + } + defer db.Close() + + genesisHash := common.HexToHash("0xd4e56740f876aef8c010b86a40d5f56745a118d0906a34e69aec8c0db1cb8fa3") + if testnet { + genesisHash = common.HexToHash("0x0cd786a2425d16f152c658316c423e6ce1181e15c3295826d7c9904cba9ce303") + } else if genesis == daoNoForkGenesis { + genesisHash = daoNoForkGenesisHash + } else if genesis == daoProForkGenesis { + genesisHash = daoProForkGenesisHash + } + config, err := core.GetChainConfig(db, genesisHash) + if err != nil { + t.Fatalf("failed to retrieve chain config: %v", err) + } + // Validate the DAO hard-fork block number against the expected value + if config.DAOForkBlock == nil { + if expect != nil { + t.Fatalf("dao hard-fork block mismatch: have nil, want %v", expect) + } + } else if config.DAOForkBlock.Cmp(expect) != 0 { + t.Fatalf("dao hard-fork block mismatch: have %v, want %v", config.DAOForkBlock, expect) + } +} + +// execDAOGeth starts a Geth instance with some DAO forks set and terminates. +func execDAOGeth(t *testing.T, datadir string, testnet bool, supportFork bool, opposeFork bool) { + args := []string{"--port", "0", "--maxpeers", "0", "--nodiscover", "--nat", "none", "--ipcdisable", "--datadir", datadir} + if testnet { + args = append(args, "--testnet") + } + if supportFork { + args = append(args, "--support-dao-fork") + } + if opposeFork { + args = append(args, "--oppose-dao-fork") + } + geth := runGeth(t, append(args, []string{"--exec", "2+2", "console"}...)...) + geth.cmd.Wait() +} diff --git a/cmd/geth/main.go b/cmd/geth/main.go index a65a43ac30..0419ae069c 100644 --- a/cmd/geth/main.go +++ b/cmd/geth/main.go @@ -150,7 +150,6 @@ participating. utils.IdentityFlag, utils.UnlockedAccountFlag, utils.PasswordFileFlag, - utils.GenesisFileFlag, utils.BootnodesFlag, utils.DataDirFlag, utils.KeyStoreDirFlag, @@ -165,6 +164,8 @@ participating. utils.MaxPendingPeersFlag, utils.EtherbaseFlag, utils.GasPriceFlag, + utils.SupportDAOFork, + utils.OpposeDAOFork, utils.MinerThreadsFlag, utils.MiningEnabledFlag, utils.MiningGPUFlag, @@ -225,12 +226,6 @@ participating. eth.EnableBadBlockReporting = true utils.SetupNetwork(ctx) - - // Deprecation warning. - if ctx.GlobalIsSet(utils.GenesisFileFlag.Name) { - common.PrintDepricationWarning("--genesis is deprecated. Switch to use 'geth init /path/to/file'") - } - return nil } diff --git a/cmd/geth/usage.go b/cmd/geth/usage.go index e7ef9e2c7b..eb897d2b5a 100644 --- a/cmd/geth/usage.go +++ b/cmd/geth/usage.go @@ -68,7 +68,6 @@ var AppHelpFlagGroups = []flagGroup{ utils.OlympicFlag, utils.TestNetFlag, utils.DevModeFlag, - utils.GenesisFileFlag, utils.IdentityFlag, utils.FastSyncFlag, utils.LightKDFFlag, diff --git a/cmd/utils/flags.go b/cmd/utils/flags.go index 38ba3a9ba0..b95f5159cd 100644 --- a/cmd/utils/flags.go +++ b/cmd/utils/flags.go @@ -126,10 +126,6 @@ var ( Name: "dev", Usage: "Developer mode: pre-configured private network with several debugging flags", } - GenesisFileFlag = cli.StringFlag{ - Name: "genesis", - Usage: "Insert/overwrite the genesis block (JSON format)", - } IdentityFlag = cli.StringFlag{ Name: "identity", Usage: "Custom node name", @@ -161,6 +157,15 @@ var ( Name: "lightkdf", Usage: "Reduce key-derivation RAM & CPU usage at some expense of KDF strength", } + // Fork settings + SupportDAOFork = cli.BoolFlag{ + Name: "support-dao-fork", + Usage: "Updates the chain rules to support the DAO hard-fork", + } + OpposeDAOFork = cli.BoolFlag{ + Name: "oppose-dao-fork", + Usage: "Updates the chain rules to oppose the DAO hard-fork", + } // Miner settings // TODO: refactor CPU vs GPU mining flags MiningEnabledFlag = cli.BoolFlag{ @@ -534,20 +539,6 @@ func MakeWSRpcHost(ctx *cli.Context) string { return ctx.GlobalString(WSListenAddrFlag.Name) } -// MakeGenesisBlock loads up a genesis block from an input file specified in the -// command line, or returns the empty string if none set. -func MakeGenesisBlock(ctx *cli.Context) string { - genesis := ctx.GlobalString(GenesisFileFlag.Name) - if genesis == "" { - return "" - } - data, err := ioutil.ReadFile(genesis) - if err != nil { - Fatalf("Failed to load custom genesis file: %v", err) - } - return string(data) -} - // MakeDatabaseHandles raises out the number of allowed file handles per process // for Geth and returns half of the allowance to assign to the database. func MakeDatabaseHandles() int { @@ -689,7 +680,6 @@ func MakeSystemNode(name, version string, relconf release.Config, extra []byte, ethConf := ð.Config{ ChainConfig: MustMakeChainConfig(ctx), - Genesis: MakeGenesisBlock(ctx), FastSync: ctx.GlobalBool(FastSyncFlag.Name), BlockChainVersion: ctx.GlobalInt(BlockchainVersionFlag.Name), DatabaseCache: ctx.GlobalInt(CacheFlag.Name), @@ -722,17 +712,13 @@ func MakeSystemNode(name, version string, relconf release.Config, extra []byte, if !ctx.GlobalIsSet(NetworkIdFlag.Name) { ethConf.NetworkId = 1 } - if !ctx.GlobalIsSet(GenesisFileFlag.Name) { - ethConf.Genesis = core.OlympicGenesisBlock() - } + ethConf.Genesis = core.OlympicGenesisBlock() case ctx.GlobalBool(TestNetFlag.Name): if !ctx.GlobalIsSet(NetworkIdFlag.Name) { ethConf.NetworkId = 2 } - if !ctx.GlobalIsSet(GenesisFileFlag.Name) { - ethConf.Genesis = core.TestNetGenesisBlock() - } + ethConf.Genesis = core.TestNetGenesisBlock() state.StartingNonce = 1048576 // (2**20) case ctx.GlobalBool(DevModeFlag.Name): @@ -747,9 +733,7 @@ func MakeSystemNode(name, version string, relconf release.Config, extra []byte, stackConf.ListenAddr = ":0" } // Override the Ethereum protocol configs - if !ctx.GlobalIsSet(GenesisFileFlag.Name) { - ethConf.Genesis = core.OlympicGenesisBlock() - } + ethConf.Genesis = core.OlympicGenesisBlock() if !ctx.GlobalIsSet(GasPriceFlag.Name) { ethConf.GasPrice = new(big.Int) } @@ -813,24 +797,44 @@ func MustMakeChainConfig(ctx *cli.Context) *core.ChainConfig { // MustMakeChainConfigFromDb reads the chain configuration from the given database. func MustMakeChainConfigFromDb(ctx *cli.Context, db ethdb.Database) *core.ChainConfig { - genesis := core.GetBlock(db, core.GetCanonicalHash(db, 0), 0) - - if genesis != nil { - // Existing genesis block, use stored config if available. + // If the chain is already initialized, use any existing chain configs + if genesis := core.GetBlock(db, core.GetCanonicalHash(db, 0), 0); genesis != nil { storedConfig, err := core.GetChainConfig(db, genesis.Hash()) if err == nil { + // Force override any existing configs if explicitly requested + switch { + case storedConfig.DAOForkBlock == nil && ctx.GlobalBool(SupportDAOFork.Name) && ctx.GlobalBool(TestNetFlag.Name): + storedConfig.DAOForkBlock = params.TestNetDAOForkBlock + case storedConfig.DAOForkBlock == nil && ctx.GlobalBool(SupportDAOFork.Name): + storedConfig.DAOForkBlock = params.MainNetDAOForkBlock + case ctx.GlobalBool(OpposeDAOFork.Name): + storedConfig.DAOForkBlock = nil + } return storedConfig } else if err != core.ChainConfigNotFoundErr { Fatalf("Could not make chain configuration: %v", err) } } - var homesteadBlockNo *big.Int + // If the chain is uninitialized nor no configs are present, create one + var homesteadBlock *big.Int if ctx.GlobalBool(TestNetFlag.Name) { - homesteadBlockNo = params.TestNetHomesteadBlock + homesteadBlock = params.TestNetHomesteadBlock } else { - homesteadBlockNo = params.MainNetHomesteadBlock + homesteadBlock = params.MainNetHomesteadBlock + } + var daoForkBlock *big.Int + switch { + case ctx.GlobalBool(SupportDAOFork.Name) && ctx.GlobalBool(TestNetFlag.Name): + daoForkBlock = params.TestNetDAOForkBlock + case ctx.GlobalBool(SupportDAOFork.Name): + daoForkBlock = params.MainNetDAOForkBlock + case ctx.GlobalBool(OpposeDAOFork.Name): + daoForkBlock = nil + } + return &core.ChainConfig{ + HomesteadBlock: homesteadBlock, + DAOForkBlock: daoForkBlock, } - return &core.ChainConfig{HomesteadBlock: homesteadBlockNo} } // MakeChainDatabase open an LevelDB using the flags passed to the client and will hard crash if it fails. diff --git a/core/config.go b/core/config.go index 81ca76aa31..d557ae5a4d 100644 --- a/core/config.go +++ b/core/config.go @@ -31,7 +31,8 @@ var ChainConfigNotFoundErr = errors.New("ChainConfig not found") // general conf // that any network, identified by its genesis block, can have its own // set of configuration options. type ChainConfig struct { - HomesteadBlock *big.Int // homestead switch block + HomesteadBlock *big.Int `json:"homesteadBlock"` // homestead switch block (0 = already homestead) + DAOForkBlock *big.Int `json:"daoForkBlock"` // TheDAO hard-fork block (nil = no fork) VmConfig vm.Config `json:"-"` } @@ -41,6 +42,5 @@ func (c *ChainConfig) IsHomestead(num *big.Int) bool { if num == nil { return false } - return num.Cmp(c.HomesteadBlock) >= 0 } diff --git a/eth/backend.go b/eth/backend.go index 351cc27445..c8a9af6eee 100644 --- a/eth/backend.go +++ b/eth/backend.go @@ -205,6 +205,8 @@ func New(ctx *node.ServiceContext, config *Config) (*Ethereum, error) { if config.ChainConfig == nil { return nil, errors.New("missing chain config") } + core.WriteChainConfig(chainDb, genesis.Hash(), config.ChainConfig) + eth.chainConfig = config.ChainConfig eth.chainConfig.VmConfig = vm.Config{ EnableJit: config.EnableJit, diff --git a/params/util.go b/params/util.go index b37bc79b21..b768508520 100644 --- a/params/util.go +++ b/params/util.go @@ -21,4 +21,6 @@ import "math/big" var ( TestNetHomesteadBlock = big.NewInt(494000) // testnet homestead block MainNetHomesteadBlock = big.NewInt(1150000) // mainnet homestead block + TestNetDAOForkBlock = big.NewInt(8888888) // testnet dao hard-fork block + MainNetDAOForkBlock = big.NewInt(9999999) // mainnet dao hard-fork block ) From b1911240b56423d6489b3c898940f9e96dfdb151 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?P=C3=A9ter=20Szil=C3=A1gyi?= Date: Fri, 8 Jul 2016 11:43:36 +0300 Subject: [PATCH 2/3] core: gracefully handle missing homestead block config --- cmd/geth/genesis_test.go | 105 +++++++++++++++++++++++++++++++++++++++ core/config.go | 2 +- 2 files changed, 106 insertions(+), 1 deletion(-) create mode 100644 cmd/geth/genesis_test.go diff --git a/cmd/geth/genesis_test.go b/cmd/geth/genesis_test.go new file mode 100644 index 0000000000..7485d7d89e --- /dev/null +++ b/cmd/geth/genesis_test.go @@ -0,0 +1,105 @@ +// Copyright 2016 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 . + +package main + +import ( + "io/ioutil" + "os" + "path/filepath" + "testing" +) + +var customGenesisTests = []struct { + genesis string + query string + result string +}{ + // Plain genesis file without anything extra + { + genesis: `{ + "alloc" : {}, + "coinbase" : "0x0000000000000000000000000000000000000000", + "difficulty" : "0x20000", + "extraData" : "", + "gasLimit" : "0x2fefd8", + "nonce" : "0x0000000000000042", + "mixhash" : "0x0000000000000000000000000000000000000000000000000000000000000000", + "parentHash" : "0x0000000000000000000000000000000000000000000000000000000000000000", + "timestamp" : "0x00" + }`, + query: "eth.getBlock(0).nonce", + result: "0x0000000000000042", + }, + // Genesis file with an empty chain configuration (ensure missing fields work) + { + genesis: `{ + "alloc" : {}, + "coinbase" : "0x0000000000000000000000000000000000000000", + "difficulty" : "0x20000", + "extraData" : "", + "gasLimit" : "0x2fefd8", + "nonce" : "0x0000000000000042", + "mixhash" : "0x0000000000000000000000000000000000000000000000000000000000000000", + "parentHash" : "0x0000000000000000000000000000000000000000000000000000000000000000", + "timestamp" : "0x00", + "config" : {} + }`, + query: "eth.getBlock(0).nonce", + result: "0x0000000000000042", + }, + // Genesis file with specific chain configurations + { + genesis: `{ + "alloc" : {}, + "coinbase" : "0x0000000000000000000000000000000000000000", + "difficulty" : "0x20000", + "extraData" : "", + "gasLimit" : "0x2fefd8", + "nonce" : "0x0000000000000042", + "mixhash" : "0x0000000000000000000000000000000000000000000000000000000000000000", + "parentHash" : "0x0000000000000000000000000000000000000000000000000000000000000000", + "timestamp" : "0x00", + "config" : { + "homesteadBlock" : 314, + }, + }`, + query: "eth.getBlock(0).nonce", + result: "0x0000000000000042", + }, +} + +// Tests that initializing Geth with a custom genesis block and chain definitions +// work properly. +func TestCustomGenesis(t *testing.T) { + for i, tt := range customGenesisTests { + // Create a temporary data directory to use and inspect later + datadir := tmpdir(t) + defer os.RemoveAll(datadir) + + // Initialize the data directory with the custom genesis block + json := filepath.Join(datadir, "genesis.json") + if err := ioutil.WriteFile(json, []byte(tt.genesis), 0600); err != nil { + t.Fatalf("test %d: failed to write genesis file: %v", i, err) + } + runGeth(t, "--datadir", datadir, "init", json).cmd.Wait() + + // Query the custom genesis block + geth := runGeth(t, "--datadir", datadir, "--maxpeers", "0", "--nodiscover", "--nat", "none", "--ipcdisable", "--exec", tt.query, "console") + geth.expectRegexp(tt.result) + geth.expectExit() + } +} diff --git a/core/config.go b/core/config.go index d557ae5a4d..d04b00e9c3 100644 --- a/core/config.go +++ b/core/config.go @@ -39,7 +39,7 @@ type ChainConfig struct { // IsHomestead returns whether num is either equal to the homestead block or greater. func (c *ChainConfig) IsHomestead(num *big.Int) bool { - if num == nil { + if c.HomesteadBlock == nil || num == nil { return false } return num.Cmp(c.HomesteadBlock) >= 0 From 4b7dbbc511a8fbc7eecca9c32e2c474a703e1218 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?P=C3=A9ter=20Szil=C3=A1gyi?= Date: Fri, 8 Jul 2016 13:00:37 +0300 Subject: [PATCH 3/3] cmd/geth, miner, params: special extradata for DAO fork start --- cmd/geth/genesis_test.go | 1 + miner/worker.go | 10 +++++++++- params/util.go | 17 ++++++++++++----- 3 files changed, 22 insertions(+), 6 deletions(-) diff --git a/cmd/geth/genesis_test.go b/cmd/geth/genesis_test.go index 7485d7d89e..43d678d895 100644 --- a/cmd/geth/genesis_test.go +++ b/cmd/geth/genesis_test.go @@ -75,6 +75,7 @@ var customGenesisTests = []struct { "timestamp" : "0x00", "config" : { "homesteadBlock" : 314, + "daoForkBlock" : 141 }, }`, query: "eth.getBlock(0).nonce", diff --git a/miner/worker.go b/miner/worker.go index 09cf6b6aa7..7197a33ba4 100644 --- a/miner/worker.go +++ b/miner/worker.go @@ -33,6 +33,7 @@ import ( "github.com/ethereum/go-ethereum/event" "github.com/ethereum/go-ethereum/logger" "github.com/ethereum/go-ethereum/logger/glog" + "github.com/ethereum/go-ethereum/params" "github.com/ethereum/go-ethereum/pow" "gopkg.in/fatih/set.v0" ) @@ -468,7 +469,14 @@ func (self *worker) commitNewWork() { Extra: self.extra, Time: big.NewInt(tstamp), } - + // If we are doing a DAO hard-fork check whether to override the extra-data or not + if daoBlock := self.config.DAOForkBlock; daoBlock != nil { + // Check whether the block is among the fork extra-override range + limit := new(big.Int).Add(daoBlock, params.DAOForkExtraRange) + if daoBlock.Cmp(header.Number) <= 0 && header.Number.Cmp(limit) < 0 { + header.Extra = common.CopyBytes(params.DAOForkBlockExtra) + } + } previous := self.current // Could potentially happen if starting to mine in an odd state. err := self.makeCurrent(parent, header) diff --git a/params/util.go b/params/util.go index b768508520..a0c9a3199a 100644 --- a/params/util.go +++ b/params/util.go @@ -16,11 +16,18 @@ package params -import "math/big" +import ( + "math/big" + + "github.com/ethereum/go-ethereum/common" +) var ( - TestNetHomesteadBlock = big.NewInt(494000) // testnet homestead block - MainNetHomesteadBlock = big.NewInt(1150000) // mainnet homestead block - TestNetDAOForkBlock = big.NewInt(8888888) // testnet dao hard-fork block - MainNetDAOForkBlock = big.NewInt(9999999) // mainnet dao hard-fork block + TestNetHomesteadBlock = big.NewInt(494000) // Testnet homestead block + MainNetHomesteadBlock = big.NewInt(1150000) // Mainnet homestead block + + TestNetDAOForkBlock = big.NewInt(8888888) // Testnet dao hard-fork block + MainNetDAOForkBlock = big.NewInt(9999999) // Mainnet dao hard-fork block + DAOForkBlockExtra = common.FromHex("0x64616f2d686172642d666f726b") // Block extradata to signel the fork with ("dao-hard-fork") + DAOForkExtraRange = big.NewInt(10) // Number of blocks to override the extradata (prevent no-fork attacks) )