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core, params, beacon/engine: implement EIP 4788 BeaconRoot (#27849)

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This change implements "EIP 4788 : Beacon block root in the EVM". It implements version-2 of EPI-4788, main difference being that the contract is an actual contract rather than a precompile, as in #27289.
This commit is contained in:
Martin Holst Swende 2023-08-22 14:33:39 +02:00 committed by GitHub
parent 0b4b299099
commit b8d38e76ef
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
19 changed files with 436 additions and 187 deletions
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2
beacon/engine/types.go
View File

@ -226,6 +226,7 @@ func ExecutableDataToBlock(params ExecutableData, versionedHashes []common.Hash)
WithdrawalsHash: withdrawalsRoot,
ExcessBlobGas: params.ExcessBlobGas,
BlobGasUsed: params.BlobGasUsed,
// TODO BeaconRoot
}
block := types.NewBlockWithHeader(header).WithBody(txs, nil /* uncles */).WithWithdrawals(params.Withdrawals)
if block.Hash() != params.BlockHash {
@ -255,6 +256,7 @@ func BlockToExecutableData(block *types.Block, fees *big.Int, blobs []kzg4844.Bl
Withdrawals: block.Withdrawals(),
BlobGasUsed: block.BlobGasUsed(),
ExcessBlobGas: block.ExcessBlobGas(),
// TODO BeaconRoot
}
blobsBundle := BlobsBundleV1{
Commitments: make([]hexutil.Bytes, 0),

5
cmd/evm/internal/t8ntool/execution.go
View File

@ -88,6 +88,7 @@ type stEnv struct {
ExcessBlobGas *uint64 `json:"excessBlobGas,omitempty"`
ParentExcessBlobGas *uint64 `json:"parentExcessBlobGas,omitempty"`
ParentBlobGasUsed *uint64 `json:"parentBlobGasUsed,omitempty"`
ParentBeaconBlockRoot *common.Hash `json:"parentBeaconBlockRoot"`
}
type stEnvMarshaling struct {
@ -182,6 +183,10 @@ func (pre *Prestate) Apply(vmConfig vm.Config, chainConfig *params.ChainConfig,
chainConfig.DAOForkBlock.Cmp(new(big.Int).SetUint64(pre.Env.Number)) == 0 {
misc.ApplyDAOHardFork(statedb)
}
if beaconRoot := pre.Env.ParentBeaconBlockRoot; beaconRoot != nil {
evm := vm.NewEVM(vmContext, vm.TxContext{}, statedb, chainConfig, vmConfig)
core.ProcessBeaconBlockRoot(*beaconRoot, evm, statedb)
}
var blobGasUsed uint64
for i, tx := range txs {
if tx.Type() == types.BlobTxType && vmContext.ExcessBlobGas == nil {

6
cmd/evm/internal/t8ntool/gen_stenv.go
View File

@ -36,6 +36,7 @@ func (s stEnv) MarshalJSON() ([]byte, error) {
ExcessBlobGas *math.HexOrDecimal64 `json:"excessBlobGas,omitempty"`
ParentExcessBlobGas *math.HexOrDecimal64 `json:"parentExcessBlobGas,omitempty"`
ParentBlobGasUsed *math.HexOrDecimal64 `json:"parentBlobGasUsed,omitempty"`
ParentBeaconBlockRoot *common.Hash `json:"parentBeaconBlockRoot"`
}
var enc stEnv
enc.Coinbase = common.UnprefixedAddress(s.Coinbase)
@ -57,6 +58,7 @@ func (s stEnv) MarshalJSON() ([]byte, error) {
enc.ExcessBlobGas = (*math.HexOrDecimal64)(s.ExcessBlobGas)
enc.ParentExcessBlobGas = (*math.HexOrDecimal64)(s.ParentExcessBlobGas)
enc.ParentBlobGasUsed = (*math.HexOrDecimal64)(s.ParentBlobGasUsed)
enc.ParentBeaconBlockRoot = s.ParentBeaconBlockRoot
return json.Marshal(&enc)
}
@ -82,6 +84,7 @@ func (s *stEnv) UnmarshalJSON(input []byte) error {
ExcessBlobGas *math.HexOrDecimal64 `json:"excessBlobGas,omitempty"`
ParentExcessBlobGas *math.HexOrDecimal64 `json:"parentExcessBlobGas,omitempty"`
ParentBlobGasUsed *math.HexOrDecimal64 `json:"parentBlobGasUsed,omitempty"`
ParentBeaconBlockRoot *common.Hash `json:"parentBeaconBlockRoot"`
}
var dec stEnv
if err := json.Unmarshal(input, &dec); err != nil {
@ -148,5 +151,8 @@ func (s *stEnv) UnmarshalJSON(input []byte) error {
if dec.ParentBlobGasUsed != nil {
s.ParentBlobGasUsed = (*uint64)(dec.ParentBlobGasUsed)
}
if dec.ParentBeaconBlockRoot != nil {
s.ParentBeaconBlockRoot = dec.ParentBeaconBlockRoot
}
return nil
}

241
cmd/evm/internal/t8ntool/transition.go
View File

@ -192,105 +192,20 @@ func Transition(ctx *cli.Context) error {
// Set the chain id
chainConfig.ChainID = big.NewInt(ctx.Int64(ChainIDFlag.Name))
var txsWithKeys []*txWithKey
if txStr != stdinSelector {
inFile, err := os.Open(txStr)
if err != nil {
return NewError(ErrorIO, fmt.Errorf("failed reading txs file: %v", err))
}
defer inFile.Close()
decoder := json.NewDecoder(inFile)
if strings.HasSuffix(txStr, ".rlp") {
var body hexutil.Bytes
if err := decoder.Decode(&body); err != nil {
if txs, err = loadTransactions(txStr, inputData, prestate.Env, chainConfig); err != nil {
return err
}
var txs types.Transactions
if err := rlp.DecodeBytes(body, &txs); err != nil {
if err := applyLondonChecks(&prestate.Env, chainConfig); err != nil {
return err
}
for _, tx := range txs {
txsWithKeys = append(txsWithKeys, &txWithKey{
key: nil,
tx: tx,
})
}
} else {
if err := decoder.Decode(&txsWithKeys); err != nil {
return NewError(ErrorJson, fmt.Errorf("failed unmarshaling txs-file: %v", err))
}
}
} else {
if len(inputData.TxRlp) > 0 {
// Decode the body of already signed transactions
body := common.FromHex(inputData.TxRlp)
var txs types.Transactions
if err := rlp.DecodeBytes(body, &txs); err != nil {
if err := applyShanghaiChecks(&prestate.Env, chainConfig); err != nil {
return err
}
for _, tx := range txs {
txsWithKeys = append(txsWithKeys, &txWithKey{
key: nil,
tx: tx,
})
if err := applyMergeChecks(&prestate.Env, chainConfig); err != nil {
return err
}
} else {
// JSON encoded transactions
txsWithKeys = inputData.Txs
}
}
// We may have to sign the transactions.
signer := types.MakeSigner(chainConfig, big.NewInt(int64(prestate.Env.Number)), prestate.Env.Timestamp)
if txs, err = signUnsignedTransactions(txsWithKeys, signer); err != nil {
return NewError(ErrorJson, fmt.Errorf("failed signing transactions: %v", err))
}
// Sanity check, to not `panic` in state_transition
if chainConfig.IsLondon(big.NewInt(int64(prestate.Env.Number))) {
if prestate.Env.BaseFee != nil {
// Already set, base fee has precedent over parent base fee.
} else if prestate.Env.ParentBaseFee != nil && prestate.Env.Number != 0 {
parent := &types.Header{
Number: new(big.Int).SetUint64(prestate.Env.Number - 1),
BaseFee: prestate.Env.ParentBaseFee,
GasUsed: prestate.Env.ParentGasUsed,
GasLimit: prestate.Env.ParentGasLimit,
}
prestate.Env.BaseFee = eip1559.CalcBaseFee(chainConfig, parent)
} else {
return NewError(ErrorConfig, errors.New("EIP-1559 config but missing 'currentBaseFee' in env section"))
}
}
if chainConfig.IsShanghai(big.NewInt(int64(prestate.Env.Number)), prestate.Env.Timestamp) && prestate.Env.Withdrawals == nil {
return NewError(ErrorConfig, errors.New("Shanghai config but missing 'withdrawals' in env section"))
}
isMerged := chainConfig.TerminalTotalDifficulty != nil && chainConfig.TerminalTotalDifficulty.BitLen() == 0
env := prestate.Env
if isMerged {
// post-merge:
// - random must be supplied
// - difficulty must be zero
switch {
case env.Random == nil:
return NewError(ErrorConfig, errors.New("post-merge requires currentRandom to be defined in env"))
case env.Difficulty != nil && env.Difficulty.BitLen() != 0:
return NewError(ErrorConfig, errors.New("post-merge difficulty must be zero (or omitted) in env"))
}
prestate.Env.Difficulty = nil
} else if env.Difficulty == nil {
// pre-merge:
// If difficulty was not provided by caller, we need to calculate it.
switch {
case env.ParentDifficulty == nil:
return NewError(ErrorConfig, errors.New("currentDifficulty was not provided, and cannot be calculated due to missing parentDifficulty"))
case env.Number == 0:
return NewError(ErrorConfig, errors.New("currentDifficulty needs to be provided for block number 0"))
case env.Timestamp <= env.ParentTimestamp:
return NewError(ErrorConfig, fmt.Errorf("currentDifficulty cannot be calculated -- currentTime (%d) needs to be after parent time (%d)",
env.Timestamp, env.ParentTimestamp))
}
prestate.Env.Difficulty = calcDifficulty(chainConfig, env.Number, env.Timestamp,
env.ParentTimestamp, env.ParentDifficulty, env.ParentUncleHash)
if err := applyCancunChecks(&prestate.Env, chainConfig); err != nil {
return err
}
// Run the test and aggregate the result
s, result, err := prestate.Apply(vmConfig, chainConfig, txs, ctx.Int64(RewardFlag.Name), getTracer)
@ -358,33 +273,149 @@ func (t *txWithKey) UnmarshalJSON(input []byte) error {
// and secondly to read them with the standard tx json format
func signUnsignedTransactions(txs []*txWithKey, signer types.Signer) (types.Transactions, error) {
var signedTxs []*types.Transaction
for i, txWithKey := range txs {
tx := txWithKey.tx
key := txWithKey.key
v, r, s := tx.RawSignatureValues()
if key != nil && v.BitLen()+r.BitLen()+s.BitLen() == 0 {
// This transaction needs to be signed
for i, tx := range txs {
var (
v, r, s = tx.tx.RawSignatureValues()
signed *types.Transaction
err error
)
if txWithKey.protected {
signed, err = types.SignTx(tx, signer, key)
if tx.key == nil || v.BitLen()+r.BitLen()+s.BitLen() != 0 {
// Already signed
signedTxs = append(signedTxs, tx.tx)
continue
}
// This transaction needs to be signed
if tx.protected {
signed, err = types.SignTx(tx.tx, signer, tx.key)
} else {
signed, err = types.SignTx(tx, types.FrontierSigner{}, key)
signed, err = types.SignTx(tx.tx, types.FrontierSigner{}, tx.key)
}
if err != nil {
return nil, NewError(ErrorJson, fmt.Errorf("tx %d: failed to sign tx: %v", i, err))
}
signedTxs = append(signedTxs, signed)
} else {
// Already signed
signedTxs = append(signedTxs, tx)
}
}
return signedTxs, nil
}
func loadTransactions(txStr string, inputData *input, env stEnv, chainConfig *params.ChainConfig) (types.Transactions, error) {
var txsWithKeys []*txWithKey
var signed types.Transactions
if txStr != stdinSelector {
data, err := os.ReadFile(txStr)
if err != nil {
return nil, NewError(ErrorIO, fmt.Errorf("failed reading txs file: %v", err))
}
if strings.HasSuffix(txStr, ".rlp") { // A file containing an rlp list
var body hexutil.Bytes
if err := json.Unmarshal(data, &body); err != nil {
return nil, err
}
// Already signed transactions
if err := rlp.DecodeBytes(body, &signed); err != nil {
return nil, err
}
return signed, nil
}
if err := json.Unmarshal(data, &txsWithKeys); err != nil {
return nil, NewError(ErrorJson, fmt.Errorf("failed unmarshaling txs-file: %v", err))
}
} else {
if len(inputData.TxRlp) > 0 {
// Decode the body of already signed transactions
body := common.FromHex(inputData.TxRlp)
// Already signed transactions
if err := rlp.DecodeBytes(body, &signed); err != nil {
return nil, err
}
return signed, nil
}
// JSON encoded transactions
txsWithKeys = inputData.Txs
}
// We may have to sign the transactions.
signer := types.MakeSigner(chainConfig, big.NewInt(int64(env.Number)), env.Timestamp)
return signUnsignedTransactions(txsWithKeys, signer)
}
func applyLondonChecks(env *stEnv, chainConfig *params.ChainConfig) error {
if !chainConfig.IsLondon(big.NewInt(int64(env.Number))) {
return nil
}
// Sanity check, to not `panic` in state_transition
if env.BaseFee != nil {
// Already set, base fee has precedent over parent base fee.
return nil
}
if env.ParentBaseFee == nil || env.Number == 0 {
return NewError(ErrorConfig, errors.New("EIP-1559 config but missing 'currentBaseFee' in env section"))
}
env.BaseFee = eip1559.CalcBaseFee(chainConfig, &types.Header{
Number: new(big.Int).SetUint64(env.Number - 1),
BaseFee: env.ParentBaseFee,
GasUsed: env.ParentGasUsed,
GasLimit: env.ParentGasLimit,
})
return nil
}
func applyShanghaiChecks(env *stEnv, chainConfig *params.ChainConfig) error {
if !chainConfig.IsShanghai(big.NewInt(int64(env.Number)), env.Timestamp) {
return nil
}
if env.Withdrawals == nil {
return NewError(ErrorConfig, errors.New("Shanghai config but missing 'withdrawals' in env section"))
}
return nil
}
func applyMergeChecks(env *stEnv, chainConfig *params.ChainConfig) error {
isMerged := chainConfig.TerminalTotalDifficulty != nil && chainConfig.TerminalTotalDifficulty.BitLen() == 0
if !isMerged {
// pre-merge: If difficulty was not provided by caller, we need to calculate it.
if env.Difficulty != nil {
// already set
return nil
}
switch {
case env.ParentDifficulty == nil:
return NewError(ErrorConfig, errors.New("currentDifficulty was not provided, and cannot be calculated due to missing parentDifficulty"))
case env.Number == 0:
return NewError(ErrorConfig, errors.New("currentDifficulty needs to be provided for block number 0"))
case env.Timestamp <= env.ParentTimestamp:
return NewError(ErrorConfig, fmt.Errorf("currentDifficulty cannot be calculated -- currentTime (%d) needs to be after parent time (%d)",
env.Timestamp, env.ParentTimestamp))
}
env.Difficulty = calcDifficulty(chainConfig, env.Number, env.Timestamp,
env.ParentTimestamp, env.ParentDifficulty, env.ParentUncleHash)
return nil
}
// post-merge:
// - random must be supplied
// - difficulty must be zero
switch {
case env.Random == nil:
return NewError(ErrorConfig, errors.New("post-merge requires currentRandom to be defined in env"))
case env.Difficulty != nil && env.Difficulty.BitLen() != 0:
return NewError(ErrorConfig, errors.New("post-merge difficulty must be zero (or omitted) in env"))
}
env.Difficulty = nil
return nil
}
func applyCancunChecks(env *stEnv, chainConfig *params.ChainConfig) error {
if !chainConfig.IsCancun(big.NewInt(int64(env.Number)), env.Timestamp) {
env.ParentBeaconBlockRoot = nil // un-set it if it has been set too early
return nil
}
// Post-cancun
// We require EIP-4788 beacon root to be set in the env
if env.ParentBeaconBlockRoot == nil {
return NewError(ErrorConfig, errors.New("post-cancun env requires parentBeaconBlockRoot to be set"))
}
return nil
}
type Alloc map[common.Address]core.GenesisAccount
func (g Alloc) OnRoot(common.Hash) {}

8
cmd/evm/t8n_test.go
View File

@ -267,6 +267,14 @@ func TestT8n(t *testing.T) {
output: t8nOutput{alloc: true, result: true},
expOut: "exp.json",
},
{ // More cancun tests
base: "./testdata/29",
input: t8nInput{
"alloc.json", "txs.json", "env.json", "Cancun", "",
},
output: t8nOutput{alloc: true, result: true},
expOut: "exp.json",
},
} {
args := []string{"t8n"}
args = append(args, tc.output.get()...)

3
cmd/evm/testdata/28/env.json vendored
View File

@ -18,5 +18,6 @@
"parentBlobGasUsed" : "0x00",
"blockHashes" : {
"0" : "0x3a9b485972e7353edd9152712492f0c58d89ef80623686b6bf947a4a6dce6cb6"
}
},
"parentBeaconBlockRoot": "0x0000beac00beac00beac00beac00beac00beac00beac00beac00beac00beac00"
}

16
cmd/evm/testdata/29/alloc.json vendored Normal file
View File

@ -0,0 +1,16 @@
{
"0xa94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
"balance" : "0x016345785d8a0000",
"code" : "0x",
"nonce" : "0x00",
"storage" : {
}
},
"0xbEac00dDB15f3B6d645C48263dC93862413A222D" : {
"balance" : "0x1",
"code" : "0x3373fffffffffffffffffffffffffffffffffffffffe14604457602036146024575f5ffd5b620180005f350680545f35146037575f5ffd5b6201800001545f5260205ff35b6201800042064281555f359062018000015500",
"nonce" : "0x00",
"storage" : {
}
}
}

20
cmd/evm/testdata/29/env.json vendored Normal file
View File

@ -0,0 +1,20 @@
{
"currentCoinbase" : "0x2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
"currentNumber" : "0x01",
"currentTimestamp" : "0x079e",
"currentGasLimit" : "0x7fffffffffffffff",
"previousHash" : "0x3a9b485972e7353edd9152712492f0c58d89ef80623686b6bf947a4a6dce6cb6",
"currentBlobGasUsed" : "0x00",
"parentTimestamp" : "0x03b6",
"parentDifficulty" : "0x00",
"parentUncleHash" : "0x1dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347",
"currentRandom" : "0x56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421",
"withdrawals" : [
],
"parentBaseFee" : "0x0a",
"parentGasUsed" : "0x00",
"parentGasLimit" : "0x7fffffffffffffff",
"parentExcessBlobGas" : "0x00",
"parentBlobGasUsed" : "0x00",
"parentBeaconBlockRoot": "0x0000beac00beac00beac00beac00beac00beac00beac00beac00beac00beac00"
}

45
cmd/evm/testdata/29/exp.json vendored Normal file
View File

@ -0,0 +1,45 @@
{
"alloc": {
"0xbeac00ddb15f3b6d645c48263dc93862413a222d": {
"code": "0x3373fffffffffffffffffffffffffffffffffffffffe14604457602036146024575f5ffd5b620180005f350680545f35146037575f5ffd5b6201800001545f5260205ff35b6201800042064281555f359062018000015500",
"storage": {
"0x000000000000000000000000000000000000000000000000000000000000079e": "0x000000000000000000000000000000000000000000000000000000000000079e",
"0x000000000000000000000000000000000000000000000000000000000001879e": "0x0000beac00beac00beac00beac00beac00beac00beac00beac00beac00beac00"
},
"balance": "0x1"
},
"0xa94f5374fce5edbc8e2a8697c15331677e6ebf0b": {
"balance": "0x16345785d871db8",
"nonce": "0x1"
}
},
"result": {
"stateRoot": "0x2db9f6bc233e8fd0af2d8023404493a19b37d9d69ace71f4e73158851fced574",
"txRoot": "0x248074fabe112f7d93917f292b64932394f835bb98da91f21501574d58ec92ab",
"receiptsRoot": "0xf78dfb743fbd92ade140711c8bbc542b5e307f0ab7984eff35d751969fe57efa",
"logsHash": "0x1dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347",
"logsBloom": "0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
"receipts": [
{
"type": "0x2",
"root": "0x",
"status": "0x1",
"cumulativeGasUsed": "0x5208",
"logsBloom": "0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
"logs": null,
"transactionHash": "0x84f70aba406a55628a0620f26d260f90aeb6ccc55fed6ec2ac13dd4f727032ed",
"contractAddress": "0x0000000000000000000000000000000000000000",
"gasUsed": "0x5208",
"effectiveGasPrice": null,
"blockHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
"transactionIndex": "0x0"
}
],
"currentDifficulty": null,
"gasUsed": "0x5208",
"currentBaseFee": "0x9",
"withdrawalsRoot": "0x56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421",
"currentExcessBlobGas": "0x0",
"currentBlobGasUsed": "0x0"
}
}

29
cmd/evm/testdata/29/readme.md vendored Normal file
View File

@ -0,0 +1,29 @@
## EIP 4788
This test contains testcases for EIP-4788. The 4788-contract is
located at address `0xbeac00ddb15f3b6d645c48263dc93862413a222d`, and this test executes a simple transaction. It also
implicitly invokes the system tx, which sets calls the contract and sets the
storage values
```
$ dir=./testdata/29/ && go run . t8n --state.fork=Cancun --input.alloc=$dir/alloc.json --input.txs=$dir/txs.json --input.env=$dir/env.json --output.alloc=stdout
INFO [08-15|20:07:56.335] Trie dumping started root=ecde45..2af8a7
INFO [08-15|20:07:56.335] Trie dumping complete accounts=2 elapsed="225.848µs"
INFO [08-15|20:07:56.335] Wrote file file=result.json
{
"alloc": {
"0xa94f5374fce5edbc8e2a8697c15331677e6ebf0b": {
"balance": "0x16345785d871db8",
"nonce": "0x1"
},
"0xbeac00541d49391ed88abf392bfc1f4dea8c4143": {
"code": "0x3373fffffffffffffffffffffffffffffffffffffffe14604457602036146024575f5ffd5b620180005f350680545f35146037575f5ffd5b6201800001545f5260205ff35b6201800042064281555f359062018000015500",
"storage": {
"0x000000000000000000000000000000000000000000000000000000000000079e": "0x000000000000000000000000000000000000000000000000000000000000079e",
"0x000000000000000000000000000000000000000000000000000000000001879e": "0x0000beac00beac00beac00beac00beac00beac00beac00beac00beac00beac00"
},
"balance": "0x
}
}
}
```

19
cmd/evm/testdata/29/txs.json vendored Normal file
View File

@ -0,0 +1,19 @@
[
{
"input" : "0x",
"gas" : "0x10000000",
"nonce" : "0x0",
"to" : "0x1111111111111111111111111111111111111111",
"value" : "0x0",
"secretKey" : "0x45a915e4d060149eb4365960e6a7a45f334393093061116b197e3240065ff2d8",
"chainId" : "0x1",
"type" : "0x2",
"v": "0x0",
"r": "0x0",
"s": "0x0",
"maxFeePerGas" : "0xfa0",
"maxPriorityFeePerGas" : "0x0",
"accessList" : [
]
}
]

16
consensus/beacon/consensus.go
View File

@ -269,15 +269,21 @@ func (beacon *Beacon) verifyHeader(chain consensus.ChainHeaderReader, header, pa
if !shanghai && header.WithdrawalsHash != nil {
return fmt.Errorf("invalid withdrawalsHash: have %x, expected nil", header.WithdrawalsHash)
}
// Verify the existence / non-existence of excessBlobGas
// Verify the existence / non-existence of cancun-specific header fields
cancun := chain.Config().IsCancun(header.Number, header.Time)
if !cancun && header.ExcessBlobGas != nil {
if !cancun {
switch {
case header.ExcessBlobGas != nil:
return fmt.Errorf("invalid excessBlobGas: have %d, expected nil", header.ExcessBlobGas)
}
if !cancun && header.BlobGasUsed != nil {
case header.BlobGasUsed != nil:
return fmt.Errorf("invalid blobGasUsed: have %d, expected nil", header.BlobGasUsed)
case header.BeaconRoot != nil:
return fmt.Errorf("invalid beaconRoot, have %#x, expected nil", header.BeaconRoot)
}
} else {
if header.BeaconRoot == nil {
return errors.New("header is missing beaconRoot")
}
if cancun {
if err := eip4844.VerifyEIP4844Header(parent, header); err != nil {
return err
}

3
core/genesis.go
View File

@ -487,6 +487,9 @@ func (g *Genesis) ToBlock() *types.Block {
if head.BlobGasUsed == nil {
head.BlobGasUsed = new(uint64)
}
if head.BeaconRoot == nil {
head.BeaconRoot = new(common.Hash)
}
}
}
return types.NewBlock(head, nil, nil, nil, trie.NewStackTrie(nil)).WithWithdrawals(withdrawals)

23
core/state_processor.go
View File

@ -76,6 +76,9 @@ func (p *StateProcessor) Process(block *types.Block, statedb *state.StateDB, cfg
vmenv = vm.NewEVM(context, vm.TxContext{}, statedb, p.config, cfg)
signer = types.MakeSigner(p.config, header.Number, header.Time)
)
if beaconRoot := block.BeaconRoot(); beaconRoot != nil {
ProcessBeaconBlockRoot(*beaconRoot, vmenv, statedb)
}
// Iterate over and process the individual transactions
for i, tx := range block.Transactions() {
msg, err := TransactionToMessage(tx, signer, header.BaseFee)
@ -160,3 +163,23 @@ func ApplyTransaction(config *params.ChainConfig, bc ChainContext, author *commo
vmenv := vm.NewEVM(blockContext, vm.TxContext{BlobHashes: tx.BlobHashes()}, statedb, config, cfg)
return applyTransaction(msg, config, gp, statedb, header.Number, header.Hash(), tx, usedGas, vmenv)
}
// ProcessBeaconBlockRoot applies the EIP-4788 system call to the beacon block root
// contract. This method is exported to be used in tests.
func ProcessBeaconBlockRoot(beaconRoot common.Hash, vmenv *vm.EVM, statedb *state.StateDB) {
// If EIP-4788 is enabled, we need to invoke the beaconroot storage contract with
// the new root
msg := &Message{
From: params.SystemAddress,
GasLimit: 30_000_000,
GasPrice: common.Big0,
GasFeeCap: common.Big0,
GasTipCap: common.Big0,
To: &params.BeaconRootsStorageAddress,
Data: beaconRoot[:],
}
vmenv.Reset(NewEVMTxContext(msg), statedb)
statedb.AddAddressToAccessList(params.BeaconRootsStorageAddress)
_, _, _ = vmenv.Call(vm.AccountRef(msg.From), *msg.To, msg.Data, 30_000_000, common.Big0)
statedb.Finalise(true)
}

3
core/state_processor_test.go
View File

@ -410,6 +410,9 @@ func GenerateBadBlock(parent *types.Block, engine consensus.Engine, txs types.Tr
used := uint64(nBlobs * params.BlobTxBlobGasPerBlob)
header.ExcessBlobGas = &excess
header.BlobGasUsed = &used
beaconRoot := common.HexToHash("0xbeac00")
header.BeaconRoot = &beaconRoot
}
// Assemble and return the final block for sealing
if config.IsShanghai(header.Number, header.Time) {

9
core/types/block.go
View File

@ -90,6 +90,9 @@ type Header struct {
// ExcessBlobGas was added by EIP-4844 and is ignored in legacy headers.
ExcessBlobGas *uint64 `json:"excessBlobGas" rlp:"optional"`
// BeaconRoot was added by EIP-4788 and is ignored in legacy headers.
BeaconRoot *common.Hash `json:"parentBeaconBlockRoot" rlp:"optional"`
}
// field type overrides for gencodec
@ -297,6 +300,10 @@ func CopyHeader(h *Header) *Header {
cpy.BlobGasUsed = new(uint64)
*cpy.BlobGasUsed = *h.BlobGasUsed
}
if h.BeaconRoot != nil {
cpy.BeaconRoot = new(common.Hash)
*cpy.BeaconRoot = *h.BeaconRoot
}
return &cpy
}
@ -376,6 +383,8 @@ func (b *Block) BaseFee() *big.Int {
return new(big.Int).Set(b.header.BaseFee)
}
func (b *Block) BeaconRoot() *common.Hash { return b.header.BeaconRoot }
func (b *Block) ExcessBlobGas() *uint64 {
var excessBlobGas *uint64
if b.header.ExcessBlobGas != nil {

6
core/types/gen_header_json.go
View File

@ -35,6 +35,7 @@ func (h Header) MarshalJSON() ([]byte, error) {
WithdrawalsHash *common.Hash `json:"withdrawalsRoot" rlp:"optional"`
BlobGasUsed *hexutil.Uint64 `json:"blobGasUsed" rlp:"optional"`
ExcessBlobGas *hexutil.Uint64 `json:"excessBlobGas" rlp:"optional"`
BeaconRoot *common.Hash `json:"parentBeaconBlockRoot" rlp:"optional"`
Hash common.Hash `json:"hash"`
}
var enc Header
@ -57,6 +58,7 @@ func (h Header) MarshalJSON() ([]byte, error) {
enc.WithdrawalsHash = h.WithdrawalsHash
enc.BlobGasUsed = (*hexutil.Uint64)(h.BlobGasUsed)
enc.ExcessBlobGas = (*hexutil.Uint64)(h.ExcessBlobGas)
enc.BeaconRoot = h.BeaconRoot
enc.Hash = h.Hash()
return json.Marshal(&enc)
}
@ -83,6 +85,7 @@ func (h *Header) UnmarshalJSON(input []byte) error {
WithdrawalsHash *common.Hash `json:"withdrawalsRoot" rlp:"optional"`
BlobGasUsed *hexutil.Uint64 `json:"blobGasUsed" rlp:"optional"`
ExcessBlobGas *hexutil.Uint64 `json:"excessBlobGas" rlp:"optional"`
BeaconRoot *common.Hash `json:"parentBeaconBlockRoot" rlp:"optional"`
}
var dec Header
if err := json.Unmarshal(input, &dec); err != nil {
@ -157,5 +160,8 @@ func (h *Header) UnmarshalJSON(input []byte) error {
if dec.ExcessBlobGas != nil {
h.ExcessBlobGas = (*uint64)(dec.ExcessBlobGas)
}
if dec.BeaconRoot != nil {
h.BeaconRoot = dec.BeaconRoot
}
return nil
}

16
core/types/gen_header_rlp.go
View File

@ -44,7 +44,8 @@ func (obj *Header) EncodeRLP(_w io.Writer) error {
_tmp2 := obj.WithdrawalsHash != nil
_tmp3 := obj.BlobGasUsed != nil
_tmp4 := obj.ExcessBlobGas != nil
if _tmp1 || _tmp2 || _tmp3 || _tmp4 {
_tmp5 := obj.BeaconRoot != nil
if _tmp1 || _tmp2 || _tmp3 || _tmp4 || _tmp5 {
if obj.BaseFee == nil {
w.Write(rlp.EmptyString)
} else {
@ -54,27 +55,34 @@ func (obj *Header) EncodeRLP(_w io.Writer) error {
w.WriteBigInt(obj.BaseFee)
}
}
if _tmp2 || _tmp3 || _tmp4 {
if _tmp2 || _tmp3 || _tmp4 || _tmp5 {
if obj.WithdrawalsHash == nil {
w.Write([]byte{0x80})
} else {
w.WriteBytes(obj.WithdrawalsHash[:])
}
}
if _tmp3 || _tmp4 {
if _tmp3 || _tmp4 || _tmp5 {
if obj.BlobGasUsed == nil {
w.Write([]byte{0x80})
} else {
w.WriteUint64((*obj.BlobGasUsed))
}
}
if _tmp4 {
if _tmp4 || _tmp5 {
if obj.ExcessBlobGas == nil {
w.Write([]byte{0x80})
} else {
w.WriteUint64((*obj.ExcessBlobGas))
}
}
if _tmp5 {
if obj.BeaconRoot == nil {
w.Write([]byte{0x80})
} else {
w.WriteBytes(obj.BeaconRoot[:])
}
}
w.ListEnd(_tmp0)
return w.Flush()
}

11
params/protocol_params.go
View File

@ -16,7 +16,11 @@
package params
import "math/big"
import (
"math/big"
"github.com/ethereum/go-ethereum/common"
)
const (
GasLimitBoundDivisor uint64 = 1024 // The bound divisor of the gas limit, used in update calculations.
@ -179,4 +183,9 @@ var (
GenesisDifficulty = big.NewInt(131072) // Difficulty of the Genesis block.
MinimumDifficulty = big.NewInt(131072) // The minimum that the difficulty may ever be.
DurationLimit = big.NewInt(13) // The decision boundary on the blocktime duration used to determine whether difficulty should go up or not.
// BeaconRootsStorageAddress is the address where historical beacon roots are stored as per EIP-4788
BeaconRootsStorageAddress = common.HexToAddress("0xbEac00dDB15f3B6d645C48263dC93862413A222D")
// SystemAddress is where the system-transaction is sent from as per EIP-4788
SystemAddress common.Address = common.HexToAddress("0xfffffffffffffffffffffffffffffffffffffffe")
)