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cmd, core, miner: add extradata validation to consensus rules

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pull/2814/head
Péter Szilágyi 8 years ago
parent 1e24c2e4f4
commit a87089fd2d
7 changed files with 275 additions and 216 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
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  1. 294
      cmd/geth/dao_test.go
  2. 3
      cmd/geth/genesis_test.go
  3. 53
      cmd/utils/flags.go
  4. 21
      core/block_validator.go
  5. 105
      core/block_validator_test.go
  6. 5
      core/config.go
  7. 10
      miner/worker.go

294
cmd/geth/dao_test.go
Unescape View File

@ -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()
}

3
cmd/geth/genesis_test.go
Unescape View File

@ -75,7 +75,8 @@ var customGenesisTests = []struct {
"timestamp" : "0x00",
"config" : {
"homesteadBlock" : 314,
"daoForkBlock" : 141
"daoForkBlock" : 141,
"daoForkSupport" : true
},
}`,
query: "eth.getBlock(0).nonce",

53
cmd/utils/flags.go
Unescape View File

@ -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.

21
core/block_validator.go
Unescape View File

@ -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
}

105
core/block_validator_test.go
Unescape View File

@ -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)
}
}

5
core/config.go
Unescape View File

@ -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:"-"`
}

10
miner/worker.go
Unescape View File

@ -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

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