From a87089fd2dc08a69a4a4f1ef93db9a2871d819a3 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?P=C3=A9ter=20Szil=C3=A1gyi?= Date: Fri, 8 Jul 2016 18:48:17 +0300 Subject: [PATCH] cmd, core, miner: add extradata validation to consensus rules --- cmd/geth/dao_test.go | 294 +++++++++++++---------------------- cmd/geth/genesis_test.go | 3 +- cmd/utils/flags.go | 53 ++++--- core/block_validator.go | 21 +++ core/block_validator_test.go | 105 +++++++++++++ core/config.go | 5 +- miner/worker.go | 10 +- 7 files changed, 275 insertions(+), 216 deletions(-) diff --git a/cmd/geth/dao_test.go b/cmd/geth/dao_test.go index fd6831c15c..bfa0c2a035 100644 --- a/cmd/geth/dao_test.go +++ b/cmd/geth/dao_test.go @@ -29,7 +29,8 @@ import ( "github.com/ethereum/go-ethereum/params" ) -var daoNoForkGenesis = `{ +// Genesis block for nodes which don't care about the DAO fork (i.e. not configured) +var daoOldGenesis = `{ "alloc" : {}, "coinbase" : "0x0000000000000000000000000000000000000000", "difficulty" : "0x20000", @@ -38,214 +39,140 @@ var daoNoForkGenesis = `{ "nonce" : "0x0000000000000042", "mixhash" : "0x0000000000000000000000000000000000000000000000000000000000000000", "parentHash" : "0x0000000000000000000000000000000000000000000000000000000000000000", - "timestamp" : "0x00" + "timestamp" : "0x00", + "config" : {} }` -var daoNoForkGenesisHash = common.HexToHash("5e1fc79cb4ffa4739177b5408045cd5d51c6cf766133f23f7cd72ee1f8d790e0") -var daoProForkGenesis = `{ +// Genesis block for nodes which actively oppose the DAO fork +var daoNoForkGenesis = `{ "alloc" : {}, "coinbase" : "0x0000000000000000000000000000000000000000", "difficulty" : "0x20000", "extraData" : "", "gasLimit" : "0x2fefd8", - "nonce" : "0x0000000000000043", + "nonce" : "0x0000000000000042", "mixhash" : "0x0000000000000000000000000000000000000000000000000000000000000000", "parentHash" : "0x0000000000000000000000000000000000000000000000000000000000000000", "timestamp" : "0x00", "config" : { - "daoForkBlock": 314 + "daoForkBlock" : 314, + "daoForkSupport" : false } }` -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) +// Genesis block for nodes which actively support the DAO fork +var daoProForkGenesis = `{ + "alloc" : {}, + "coinbase" : "0x0000000000000000000000000000000000000000", + "difficulty" : "0x20000", + "extraData" : "", + "gasLimit" : "0x2fefd8", + "nonce" : "0x0000000000000042", + "mixhash" : "0x0000000000000000000000000000000000000000000000000000000000000000", + "parentHash" : "0x0000000000000000000000000000000000000000000000000000000000000000", + "timestamp" : "0x00", + "config" : { + "daoForkBlock" : 314, + "daoForkSupport" : true } - 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) - } -} +var daoGenesisHash = common.HexToHash("5e1fc79cb4ffa4739177b5408045cd5d51c6cf766133f23f7cd72ee1f8d790e0") +var daoGenesisForkBlock = big.NewInt(314) -// Tests that starting up an already existing node with various DAO fork override -// flags correctly changes the chain configs in the database. +// Tests that the DAO hard-fork number and the nodes support/opposition is correctly +// set in the database after various initialization procedures and invocations. 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) + testDAOForkBlockNewChain(t, false, "", [][2]bool{{false, false}}, params.MainNetDAOForkBlock, false) } -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 TestDAOSupportMainnet(t *testing.T) { + testDAOForkBlockNewChain(t, false, "", [][2]bool{{true, false}}, params.MainNetDAOForkBlock, true) } -func TestDAOContinueExplicitOpposeMainnet(t *testing.T) { - testDAOForkBlockOldChain(t, false, "", false, false, true, true, nil) +func TestDAOOpposeMainnet(t *testing.T) { + testDAOForkBlockNewChain(t, false, "", [][2]bool{{false, true}}, params.MainNetDAOForkBlock, false) } -func TestDAOContinueImplicitOpposeMainnet(t *testing.T) { - testDAOForkBlockOldChain(t, false, "", false, false, true, false, nil) +func TestDAOSwitchToSupportMainnet(t *testing.T) { + testDAOForkBlockNewChain(t, false, "", [][2]bool{{false, true}, {true, false}}, params.MainNetDAOForkBlock, true) } -func TestDAOSwitchOpposeMainnet(t *testing.T) { - testDAOForkBlockOldChain(t, false, "", true, false, false, true, nil) +func TestDAOSwitchToOpposeMainnet(t *testing.T) { + testDAOForkBlockNewChain(t, false, "", [][2]bool{{true, false}, {false, true}}, params.MainNetDAOForkBlock, false) } 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) + testDAOForkBlockNewChain(t, true, "", [][2]bool{{false, false}}, params.TestNetDAOForkBlock, false) } -func TestDAOStartOpposeTestnet(t *testing.T) { - testDAOForkBlockOldChain(t, true, "", false, false, false, true, nil) +func TestDAOSupportTestnet(t *testing.T) { + testDAOForkBlockNewChain(t, true, "", [][2]bool{{true, false}}, params.TestNetDAOForkBlock, true) } -func TestDAOContinueExplicitOpposeTestnet(t *testing.T) { - testDAOForkBlockOldChain(t, true, "", false, false, true, true, nil) +func TestDAOOpposeTestnet(t *testing.T) { + testDAOForkBlockNewChain(t, true, "", [][2]bool{{false, true}}, params.TestNetDAOForkBlock, false) } -func TestDAOContinueImplicitOpposeTestnet(t *testing.T) { - testDAOForkBlockOldChain(t, true, "", false, false, true, false, nil) +func TestDAOSwitchToSupportTestnet(t *testing.T) { + testDAOForkBlockNewChain(t, true, "", [][2]bool{{false, true}, {true, false}}, params.TestNetDAOForkBlock, true) } -func TestDAOSwitchOpposeTestnet(t *testing.T) { - testDAOForkBlockOldChain(t, true, "", true, false, false, true, nil) +func TestDAOSwitchToOpposeTestnet(t *testing.T) { + testDAOForkBlockNewChain(t, true, "", [][2]bool{{true, false}, {false, true}}, params.TestNetDAOForkBlock, false) } -func TestDAODefaultPrivnet(t *testing.T) { - testDAOForkBlockOldChain(t, false, daoNoForkGenesis, false, false, false, false, nil) +func TestDAOInitOldPrivnet(t *testing.T) { + testDAOForkBlockNewChain(t, false, daoOldGenesis, [][2]bool{}, nil, false) } -func TestDAOStartSupportConPrivnet(t *testing.T) { - testDAOForkBlockOldChain(t, false, daoNoForkGenesis, false, true, false, false, params.MainNetDAOForkBlock) +func TestDAODefaultOldPrivnet(t *testing.T) { + testDAOForkBlockNewChain(t, false, daoOldGenesis, [][2]bool{{false, false}}, params.MainNetDAOForkBlock, false) } -func TestDAOContinueExplicitSupportConPrivnet(t *testing.T) { - testDAOForkBlockOldChain(t, false, daoNoForkGenesis, true, true, false, false, params.MainNetDAOForkBlock) +func TestDAOSupportOldPrivnet(t *testing.T) { + testDAOForkBlockNewChain(t, false, daoOldGenesis, [][2]bool{{true, false}}, params.MainNetDAOForkBlock, true) } -func TestDAOContinueImplicitSupportConPrivnet(t *testing.T) { - testDAOForkBlockOldChain(t, false, daoNoForkGenesis, true, false, false, false, params.MainNetDAOForkBlock) +func TestDAOOpposeOldPrivnet(t *testing.T) { + testDAOForkBlockNewChain(t, false, daoOldGenesis, [][2]bool{{false, true}}, params.MainNetDAOForkBlock, false) } -func TestDAOSwitchSupportConPrivnet(t *testing.T) { - testDAOForkBlockOldChain(t, false, daoNoForkGenesis, false, true, true, false, params.MainNetDAOForkBlock) +func TestDAOSwitchToSupportOldPrivnet(t *testing.T) { + testDAOForkBlockNewChain(t, false, daoOldGenesis, [][2]bool{{false, true}, {true, false}}, params.MainNetDAOForkBlock, true) } -func TestDAOStartOpposeConPrivnet(t *testing.T) { - testDAOForkBlockOldChain(t, false, daoNoForkGenesis, false, false, false, true, nil) +func TestDAOSwitchToOpposeOldPrivnet(t *testing.T) { + testDAOForkBlockNewChain(t, false, daoOldGenesis, [][2]bool{{true, false}, {false, true}}, params.MainNetDAOForkBlock, false) } -func TestDAOContinueExplicitOpposeConPrivnet(t *testing.T) { - testDAOForkBlockOldChain(t, false, daoNoForkGenesis, false, false, true, true, nil) +func TestDAOInitNoForkPrivnet(t *testing.T) { + testDAOForkBlockNewChain(t, false, daoNoForkGenesis, [][2]bool{}, daoGenesisForkBlock, false) } -func TestDAOContinueImplicitOpposeConPrivnet(t *testing.T) { - testDAOForkBlockOldChain(t, false, daoNoForkGenesis, false, false, true, false, nil) +func TestDAODefaultNoForkPrivnet(t *testing.T) { + testDAOForkBlockNewChain(t, false, daoNoForkGenesis, [][2]bool{{false, false}}, daoGenesisForkBlock, false) } -func TestDAOSwitchOpposeConPrivnet(t *testing.T) { - testDAOForkBlockOldChain(t, false, daoNoForkGenesis, true, false, false, true, nil) +func TestDAOSupportNoForkPrivnet(t *testing.T) { + testDAOForkBlockNewChain(t, false, daoNoForkGenesis, [][2]bool{{true, false}}, daoGenesisForkBlock, true) } -func TestDAODefaultProPrivnet(t *testing.T) { - testDAOForkBlockOldChain(t, false, daoProForkGenesis, false, false, false, false, daoProForkBlock) +func TestDAOOpposeNoForkPrivnet(t *testing.T) { + testDAOForkBlockNewChain(t, false, daoNoForkGenesis, [][2]bool{{false, true}}, daoGenesisForkBlock, false) } -func TestDAOStartSupportProPrivnet(t *testing.T) { - testDAOForkBlockOldChain(t, false, daoProForkGenesis, false, true, false, false, daoProForkBlock) +func TestDAOSwitchToSupportNoForkPrivnet(t *testing.T) { + testDAOForkBlockNewChain(t, false, daoNoForkGenesis, [][2]bool{{false, true}, {true, false}}, daoGenesisForkBlock, true) } -func TestDAOContinueExplicitSupportProPrivnet(t *testing.T) { - testDAOForkBlockOldChain(t, false, daoProForkGenesis, true, true, false, false, daoProForkBlock) +func TestDAOSwitchToOpposeNoForkPrivnet(t *testing.T) { + testDAOForkBlockNewChain(t, false, daoNoForkGenesis, [][2]bool{{true, false}, {false, true}}, daoGenesisForkBlock, false) } -func TestDAOContinueImplicitSupportProPrivnet(t *testing.T) { - testDAOForkBlockOldChain(t, false, daoProForkGenesis, true, false, false, false, daoProForkBlock) +func TestDAOInitProForkPrivnet(t *testing.T) { + testDAOForkBlockNewChain(t, false, daoProForkGenesis, [][2]bool{}, daoGenesisForkBlock, true) } -func TestDAOSwitchSupportProPrivnet(t *testing.T) { - testDAOForkBlockOldChain(t, false, daoProForkGenesis, false, true, true, false, params.MainNetDAOForkBlock) +func TestDAODefaultProForkPrivnet(t *testing.T) { + testDAOForkBlockNewChain(t, false, daoProForkGenesis, [][2]bool{{false, false}}, daoGenesisForkBlock, true) } -func TestDAOStartOpposeProPrivnet(t *testing.T) { - testDAOForkBlockOldChain(t, false, daoProForkGenesis, false, false, false, true, nil) +func TestDAOSupportProForkPrivnet(t *testing.T) { + testDAOForkBlockNewChain(t, false, daoProForkGenesis, [][2]bool{{true, false}}, daoGenesisForkBlock, true) } -func TestDAOContinueExplicitOpposeProPrivnet(t *testing.T) { - testDAOForkBlockOldChain(t, false, daoProForkGenesis, false, false, true, true, nil) +func TestDAOOpposeProForkPrivnet(t *testing.T) { + testDAOForkBlockNewChain(t, false, daoProForkGenesis, [][2]bool{{false, true}}, daoGenesisForkBlock, false) } -func TestDAOContinueImplicitOpposeProPrivnet(t *testing.T) { - testDAOForkBlockOldChain(t, false, daoProForkGenesis, false, false, true, false, nil) +func TestDAOSwitchToSupportProForkPrivnet(t *testing.T) { + testDAOForkBlockNewChain(t, false, daoProForkGenesis, [][2]bool{{false, true}, {true, false}}, daoGenesisForkBlock, true) } -func TestDAOSwitchOpposeProPrivnet(t *testing.T) { - testDAOForkBlockOldChain(t, false, daoProForkGenesis, true, false, false, true, nil) +func TestDAOSwitchToOpposeProForkPrivnet(t *testing.T) { + testDAOForkBlockNewChain(t, false, daoProForkGenesis, [][2]bool{{true, false}, {false, true}}, daoGenesisForkBlock, false) } -func testDAOForkBlockOldChain(t *testing.T, testnet bool, genesis string, oldSupport, newSupport, oldOppose, newOppose bool, expect *big.Int) { +func testDAOForkBlockNewChain(t *testing.T, testnet bool, genesis string, votes [][2]bool, expectBlock *big.Int, expectVote bool) { // 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 + // 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 { @@ -253,12 +180,23 @@ func testDAOForkBlockOldChain(t *testing.T, testnet bool, genesis string, oldSup } runGeth(t, "--datadir", datadir, "init", json).cmd.Wait() } - execDAOGeth(t, datadir, testnet, oldSupport, oldOppose) - execDAOGeth(t, datadir, testnet, newSupport, newOppose) - + for _, vote := range votes { + args := []string{"--port", "0", "--maxpeers", "0", "--nodiscover", "--nat", "none", "--ipcdisable", "--datadir", datadir} + if testnet { + args = append(args, "--testnet") + } + if vote[0] { + args = append(args, "--support-dao-fork") + } + if vote[1] { + args = append(args, "--oppose-dao-fork") + } + geth := runGeth(t, append(args, []string{"--exec", "2+2", "console"}...)...) + geth.cmd.Wait() + } // Retrieve the DAO config flag from the database path := filepath.Join(datadir, "chaindata") - if testnet { + if testnet && genesis == "" { path = filepath.Join(datadir, "testnet", "chaindata") } db, err := ethdb.NewLDBDatabase(path, 0, 0) @@ -270,10 +208,9 @@ func testDAOForkBlockOldChain(t *testing.T, testnet bool, genesis string, oldSup genesisHash := common.HexToHash("0xd4e56740f876aef8c010b86a40d5f56745a118d0906a34e69aec8c0db1cb8fa3") if testnet { genesisHash = common.HexToHash("0x0cd786a2425d16f152c658316c423e6ce1181e15c3295826d7c9904cba9ce303") - } else if genesis == daoNoForkGenesis { - genesisHash = daoNoForkGenesisHash - } else if genesis == daoProForkGenesis { - genesisHash = daoProForkGenesisHash + } + if genesis != "" { + genesisHash = daoGenesisHash } config, err := core.GetChainConfig(db, genesisHash) if err != nil { @@ -281,26 +218,15 @@ func testDAOForkBlockOldChain(t *testing.T, testnet bool, genesis string, oldSup } // 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) + if expectBlock != nil { + t.Errorf("dao hard-fork block mismatch: have nil, want %v", expectBlock) } - } 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") + } else if expectBlock == nil { + t.Errorf("dao hard-fork block mismatch: have %v, want nil", config.DAOForkBlock) + } else if config.DAOForkBlock.Cmp(expectBlock) != 0 { + t.Errorf("dao hard-fork block mismatch: have %v, want %v", config.DAOForkBlock, expectBlock) } - if opposeFork { - args = append(args, "--oppose-dao-fork") + if config.DAOForkSupport != expectVote { + t.Errorf("dao hard-fork support mismatch: have %v, want %v", config.DAOForkSupport, expectVote) } - geth := runGeth(t, append(args, []string{"--exec", "2+2", "console"}...)...) - geth.cmd.Wait() } diff --git a/cmd/geth/genesis_test.go b/cmd/geth/genesis_test.go index 43d678d895..4f8b1642ef 100644 --- a/cmd/geth/genesis_test.go +++ b/cmd/geth/genesis_test.go @@ -75,7 +75,8 @@ var customGenesisTests = []struct { "timestamp" : "0x00", "config" : { "homesteadBlock" : 314, - "daoForkBlock" : 141 + "daoForkBlock" : 141, + "daoForkSupport" : true }, }`, query: "eth.getBlock(0).nonce", diff --git a/cmd/utils/flags.go b/cmd/utils/flags.go index b95f5159cd..fae1647b3e 100644 --- a/cmd/utils/flags.go +++ b/cmd/utils/flags.go @@ -798,43 +798,42 @@ 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 { // If the chain is already initialized, use any existing chain configs + config := new(core.ChainConfig) + 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 { + switch err { + case nil: + config = storedConfig + case core.ChainConfigNotFoundErr: + // No configs found, use empty, will populate below + default: Fatalf("Could not make chain configuration: %v", err) } } - // If the chain is uninitialized nor no configs are present, create one - var homesteadBlock *big.Int - if ctx.GlobalBool(TestNetFlag.Name) { - homesteadBlock = params.TestNetHomesteadBlock - } else { - homesteadBlock = params.MainNetHomesteadBlock + // Set any missing fields due to them being unset or system upgrade + if config.HomesteadBlock == nil { + if ctx.GlobalBool(TestNetFlag.Name) { + config.HomesteadBlock = new(big.Int).Set(params.TestNetHomesteadBlock) + } else { + config.HomesteadBlock = new(big.Int).Set(params.MainNetHomesteadBlock) + } } - var daoForkBlock *big.Int + if config.DAOForkBlock == nil { + if ctx.GlobalBool(TestNetFlag.Name) { + config.DAOForkBlock = new(big.Int).Set(params.TestNetDAOForkBlock) + } else { + config.DAOForkBlock = new(big.Int).Set(params.MainNetDAOForkBlock) + } + } + // Force override any existing configs if explicitly requested switch { - case ctx.GlobalBool(SupportDAOFork.Name) && ctx.GlobalBool(TestNetFlag.Name): - daoForkBlock = params.TestNetDAOForkBlock case ctx.GlobalBool(SupportDAOFork.Name): - daoForkBlock = params.MainNetDAOForkBlock + config.DAOForkSupport = true case ctx.GlobalBool(OpposeDAOFork.Name): - daoForkBlock = nil - } - return &core.ChainConfig{ - HomesteadBlock: homesteadBlock, - DAOForkBlock: daoForkBlock, + config.DAOForkSupport = false } + return config } // MakeChainDatabase open an LevelDB using the flags passed to the client and will hard crash if it fails. diff --git a/core/block_validator.go b/core/block_validator.go index c3f959324a..73d5813288 100644 --- a/core/block_validator.go +++ b/core/block_validator.go @@ -17,6 +17,7 @@ package core import ( + "bytes" "fmt" "math/big" "time" @@ -247,6 +248,26 @@ func ValidateHeader(config *ChainConfig, pow pow.PoW, header *types.Header, pare return &BlockNonceErr{header.Number, header.Hash(), header.Nonce.Uint64()} } } + // DAO hard-fork extension to the header validity: a) if the node is no-fork, + // do not accept blocks in the [fork, fork+10) range with the fork specific + // extra-data set; b) if the node is pro-fork, require blocks in the specific + // range to have the unique extra-data set. + if daoBlock := 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 { + // Depending whether we support or oppose the fork, verrift the extra-data contents + if config.DAOForkSupport { + if bytes.Compare(header.Extra, params.DAOForkBlockExtra) != 0 { + return ValidationError("DAO pro-fork bad block extra-data: 0x%x", header.Extra) + } + } else { + if bytes.Compare(header.Extra, params.DAOForkBlockExtra) == 0 { + return ValidationError("DAO no-fork bad block extra-data: 0x%x", header.Extra) + } + } + } + } return nil } diff --git a/core/block_validator_test.go b/core/block_validator_test.go index c6daf9e7f3..5320c3f8da 100644 --- a/core/block_validator_test.go +++ b/core/block_validator_test.go @@ -27,6 +27,7 @@ import ( "github.com/ethereum/go-ethereum/core/vm" "github.com/ethereum/go-ethereum/ethdb" "github.com/ethereum/go-ethereum/event" + "github.com/ethereum/go-ethereum/params" "github.com/ethereum/go-ethereum/pow/ezp" ) @@ -92,3 +93,107 @@ func TestPutReceipt(t *testing.T) { t.Error("expected to get 1 receipt, got none.") } } + +// Tests that DAO-fork enabled clients can properly filter out fork-commencing +// blocks based on their extradata fields. +func TestDAOForkRangeExtradata(t *testing.T) { + forkBlock := big.NewInt(32) + + // Generate a common prefix for both pro-forkers and non-forkers + db, _ := ethdb.NewMemDatabase() + genesis := WriteGenesisBlockForTesting(db) + prefix, _ := GenerateChain(genesis, db, int(forkBlock.Int64()-1), func(i int, gen *BlockGen) {}) + + // Create the concurrent, conflicting two nodes + proDb, _ := ethdb.NewMemDatabase() + WriteGenesisBlockForTesting(proDb) + proBc, _ := NewBlockChain(proDb, &ChainConfig{HomesteadBlock: big.NewInt(0), DAOForkBlock: forkBlock, DAOForkSupport: true}, new(FakePow), new(event.TypeMux)) + + conDb, _ := ethdb.NewMemDatabase() + WriteGenesisBlockForTesting(conDb) + conBc, _ := NewBlockChain(conDb, &ChainConfig{HomesteadBlock: big.NewInt(0), DAOForkBlock: forkBlock, DAOForkSupport: false}, new(FakePow), new(event.TypeMux)) + + if _, err := proBc.InsertChain(prefix); err != nil { + t.Fatalf("pro-fork: failed to import chain prefix: %v", err) + } + if _, err := conBc.InsertChain(prefix); err != nil { + t.Fatalf("con-fork: failed to import chain prefix: %v", err) + } + // Try to expand both pro-fork and non-fork chains iteratively with other camp's blocks + for i := int64(0); i < params.DAOForkExtraRange.Int64(); i++ { + // Create a pro-fork block, and try to feed into the no-fork chain + db, _ = ethdb.NewMemDatabase() + WriteGenesisBlockForTesting(db) + bc, _ := NewBlockChain(db, &ChainConfig{HomesteadBlock: big.NewInt(0)}, new(FakePow), new(event.TypeMux)) + + blocks := conBc.GetBlocksFromHash(conBc.CurrentBlock().Hash(), int(conBc.CurrentBlock().NumberU64()+1)) + for j := 0; j < len(blocks)/2; j++ { + blocks[j], blocks[len(blocks)-1-j] = blocks[len(blocks)-1-j], blocks[j] + } + if _, err := bc.InsertChain(blocks); err != nil { + t.Fatalf("failed to import contra-fork chain for expansion: %v", err) + } + blocks, _ = GenerateChain(conBc.CurrentBlock(), db, 1, func(i int, gen *BlockGen) { gen.SetExtra(params.DAOForkBlockExtra) }) + if _, err := conBc.InsertChain(blocks); err == nil { + t.Fatalf("contra-fork chain accepted pro-fork block: %v", blocks[0]) + } + // Create a proper no-fork block for the contra-forker + blocks, _ = GenerateChain(conBc.CurrentBlock(), db, 1, func(i int, gen *BlockGen) {}) + if _, err := conBc.InsertChain(blocks); err != nil { + t.Fatalf("contra-fork chain didn't accepted no-fork block: %v", err) + } + // Create a no-fork block, and try to feed into the pro-fork chain + db, _ = ethdb.NewMemDatabase() + WriteGenesisBlockForTesting(db) + bc, _ = NewBlockChain(db, &ChainConfig{HomesteadBlock: big.NewInt(0)}, new(FakePow), new(event.TypeMux)) + + blocks = proBc.GetBlocksFromHash(proBc.CurrentBlock().Hash(), int(proBc.CurrentBlock().NumberU64()+1)) + for j := 0; j < len(blocks)/2; j++ { + blocks[j], blocks[len(blocks)-1-j] = blocks[len(blocks)-1-j], blocks[j] + } + if _, err := bc.InsertChain(blocks); err != nil { + t.Fatalf("failed to import pro-fork chain for expansion: %v", err) + } + blocks, _ = GenerateChain(proBc.CurrentBlock(), db, 1, func(i int, gen *BlockGen) {}) + if _, err := proBc.InsertChain(blocks); err == nil { + t.Fatalf("pro-fork chain accepted contra-fork block: %v", blocks[0]) + } + // Create a proper pro-fork block for the pro-forker + blocks, _ = GenerateChain(proBc.CurrentBlock(), db, 1, func(i int, gen *BlockGen) { gen.SetExtra(params.DAOForkBlockExtra) }) + if _, err := proBc.InsertChain(blocks); err != nil { + t.Fatalf("pro-fork chain didn't accepted pro-fork block: %v", err) + } + } + // Verify that contra-forkers accept pro-fork extra-datas after forking finishes + db, _ = ethdb.NewMemDatabase() + WriteGenesisBlockForTesting(db) + bc, _ := NewBlockChain(db, &ChainConfig{HomesteadBlock: big.NewInt(0)}, new(FakePow), new(event.TypeMux)) + + blocks := conBc.GetBlocksFromHash(conBc.CurrentBlock().Hash(), int(conBc.CurrentBlock().NumberU64()+1)) + for j := 0; j < len(blocks)/2; j++ { + blocks[j], blocks[len(blocks)-1-j] = blocks[len(blocks)-1-j], blocks[j] + } + if _, err := bc.InsertChain(blocks); err != nil { + t.Fatalf("failed to import contra-fork chain for expansion: %v", err) + } + blocks, _ = GenerateChain(conBc.CurrentBlock(), db, 1, func(i int, gen *BlockGen) { gen.SetExtra(params.DAOForkBlockExtra) }) + if _, err := conBc.InsertChain(blocks); err != nil { + t.Fatalf("contra-fork chain didn't accept pro-fork block post-fork: %v", err) + } + // Verify that pro-forkers accept contra-fork extra-datas after forking finishes + db, _ = ethdb.NewMemDatabase() + WriteGenesisBlockForTesting(db) + bc, _ = NewBlockChain(db, &ChainConfig{HomesteadBlock: big.NewInt(0)}, new(FakePow), new(event.TypeMux)) + + blocks = proBc.GetBlocksFromHash(proBc.CurrentBlock().Hash(), int(proBc.CurrentBlock().NumberU64()+1)) + for j := 0; j < len(blocks)/2; j++ { + blocks[j], blocks[len(blocks)-1-j] = blocks[len(blocks)-1-j], blocks[j] + } + if _, err := bc.InsertChain(blocks); err != nil { + t.Fatalf("failed to import pro-fork chain for expansion: %v", err) + } + blocks, _ = GenerateChain(proBc.CurrentBlock(), db, 1, func(i int, gen *BlockGen) {}) + if _, err := proBc.InsertChain(blocks); err != nil { + t.Fatalf("pro-fork chain didn't accept contra-fork block post-fork: %v", err) + } +} diff --git a/core/config.go b/core/config.go index d04b00e9c3..c0d065a57f 100644 --- a/core/config.go +++ b/core/config.go @@ -31,8 +31,9 @@ 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 `json:"homesteadBlock"` // homestead switch block (0 = already homestead) - DAOForkBlock *big.Int `json:"daoForkBlock"` // TheDAO hard-fork block (nil = no fork) + HomesteadBlock *big.Int `json:"homesteadBlock"` // Homestead switch block (nil = no fork, 0 = already homestead) + DAOForkBlock *big.Int `json:"daoForkBlock"` // TheDAO hard-fork switch block (nil = no fork) + DAOForkSupport bool `json:"daoForkSupport"` // Whether the nodes supports or opposes the DAO hard-fork VmConfig vm.Config `json:"-"` } diff --git a/miner/worker.go b/miner/worker.go index 7197a33ba4..ba0085d521 100644 --- a/miner/worker.go +++ b/miner/worker.go @@ -17,6 +17,7 @@ package miner import ( + "bytes" "fmt" "math/big" "sync" @@ -469,12 +470,17 @@ 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 we are care about TheDAO 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) + // Depending whether we support or oppose the fork, override differently + if self.config.DAOForkSupport { + header.Extra = common.CopyBytes(params.DAOForkBlockExtra) + } else if bytes.Compare(header.Extra, params.DAOForkBlockExtra) == 0 { + header.Extra = []byte{} // If miner opposes, don't let it use the reserved extra-data + } } } previous := self.current