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333 lines
12 KiB
333 lines
12 KiB
// Copyright 2015 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package core
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import (
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"fmt"
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"math/big"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/consensus/misc"
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"github.com/ethereum/go-ethereum/core/state"
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"github.com/ethereum/go-ethereum/core/types"
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"github.com/ethereum/go-ethereum/core/vm"
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"github.com/ethereum/go-ethereum/crypto"
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"github.com/ethereum/go-ethereum/params"
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)
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// StateProcessor is a basic Processor, which takes care of transitioning
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// state from one point to another.
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//
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// StateProcessor implements Processor.
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type StateProcessor struct {
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config *params.ChainConfig // Chain configuration options
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chain *HeaderChain // Canonical header chain
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}
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// NewStateProcessor initialises a new StateProcessor.
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func NewStateProcessor(config *params.ChainConfig, chain *HeaderChain) *StateProcessor {
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return &StateProcessor{
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config: config,
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chain: chain,
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}
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}
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// Process processes the state changes according to the Ethereum rules by running
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// the transaction messages using the statedb and applying any rewards to both
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// the processor (coinbase) and any included uncles.
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//
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// Process returns the receipts and logs accumulated during the process and
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// returns the amount of gas that was used in the process. If any of the
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// transactions failed to execute due to insufficient gas it will return an error.
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func (p *StateProcessor) Process(block *types.Block, statedb *state.StateDB, cfg vm.Config) (*ProcessResult, error) {
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var (
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receipts types.Receipts
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usedGas = new(uint64)
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header = block.Header()
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blockHash = block.Hash()
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blockNumber = block.Number()
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allLogs []*types.Log
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gp = new(GasPool).AddGas(block.GasLimit())
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)
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// Mutate the block and state according to any hard-fork specs
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if p.config.DAOForkSupport && p.config.DAOForkBlock != nil && p.config.DAOForkBlock.Cmp(block.Number()) == 0 {
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misc.ApplyDAOHardFork(statedb)
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}
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var (
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context vm.BlockContext
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signer = types.MakeSigner(p.config, header.Number, header.Time)
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)
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// Apply pre-execution system calls.
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context = NewEVMBlockContext(header, p.chain, nil)
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vmenv := vm.NewEVM(context, vm.TxContext{}, statedb, p.config, cfg)
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var tracingStateDB = vm.StateDB(statedb)
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if hooks := cfg.Tracer; hooks != nil {
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tracingStateDB = state.NewHookedState(statedb, hooks)
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}
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if beaconRoot := block.BeaconRoot(); beaconRoot != nil {
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ProcessBeaconBlockRoot(*beaconRoot, vmenv, tracingStateDB)
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}
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if p.config.IsPrague(block.Number(), block.Time()) {
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ProcessParentBlockHash(block.ParentHash(), vmenv, tracingStateDB)
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}
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// Iterate over and process the individual transactions
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for i, tx := range block.Transactions() {
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msg, err := TransactionToMessage(tx, signer, header.BaseFee)
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if err != nil {
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return nil, fmt.Errorf("could not apply tx %d [%v]: %w", i, tx.Hash().Hex(), err)
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}
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statedb.SetTxContext(tx.Hash(), i)
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receipt, err := ApplyTransactionWithEVM(msg, p.config, gp, statedb, blockNumber, blockHash, tx, usedGas, vmenv)
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if err != nil {
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return nil, fmt.Errorf("could not apply tx %d [%v]: %w", i, tx.Hash().Hex(), err)
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}
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receipts = append(receipts, receipt)
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allLogs = append(allLogs, receipt.Logs...)
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}
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// Read requests if Prague is enabled.
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var requests [][]byte
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if p.config.IsPrague(block.Number(), block.Time()) {
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// EIP-6110 deposits
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depositRequests, err := ParseDepositLogs(allLogs, p.config)
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if err != nil {
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return nil, err
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}
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requests = append(requests, depositRequests)
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// EIP-7002 withdrawals
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withdrawalRequests := ProcessWithdrawalQueue(vmenv, tracingStateDB)
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requests = append(requests, withdrawalRequests)
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// EIP-7251 consolidations
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consolidationRequests := ProcessConsolidationQueue(vmenv, tracingStateDB)
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requests = append(requests, consolidationRequests)
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}
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// Finalize the block, applying any consensus engine specific extras (e.g. block rewards)
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p.chain.engine.Finalize(p.chain, header, tracingStateDB, block.Body())
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return &ProcessResult{
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Receipts: receipts,
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Requests: requests,
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Logs: allLogs,
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GasUsed: *usedGas,
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}, nil
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}
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// ApplyTransactionWithEVM attempts to apply a transaction to the given state database
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// and uses the input parameters for its environment similar to ApplyTransaction. However,
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// this method takes an already created EVM instance as input.
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func ApplyTransactionWithEVM(msg *Message, config *params.ChainConfig, gp *GasPool, statedb *state.StateDB, blockNumber *big.Int, blockHash common.Hash, tx *types.Transaction, usedGas *uint64, evm *vm.EVM) (receipt *types.Receipt, err error) {
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var tracingStateDB = vm.StateDB(statedb)
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if hooks := evm.Config.Tracer; hooks != nil {
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tracingStateDB = state.NewHookedState(statedb, hooks)
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if hooks.OnTxStart != nil {
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hooks.OnTxStart(evm.GetVMContext(), tx, msg.From)
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}
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if hooks.OnTxEnd != nil {
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defer func() { hooks.OnTxEnd(receipt, err) }()
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}
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}
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// Create a new context to be used in the EVM environment.
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txContext := NewEVMTxContext(msg)
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evm.Reset(txContext, tracingStateDB)
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// Apply the transaction to the current state (included in the env).
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result, err := ApplyMessage(evm, msg, gp)
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if err != nil {
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return nil, err
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}
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// Update the state with pending changes.
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var root []byte
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if config.IsByzantium(blockNumber) {
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tracingStateDB.Finalise(true)
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} else {
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root = statedb.IntermediateRoot(config.IsEIP158(blockNumber)).Bytes()
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}
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*usedGas += result.UsedGas
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return MakeReceipt(evm, result, statedb, blockNumber, blockHash, tx, *usedGas, root), nil
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}
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// MakeReceipt generates the receipt object for a transaction given its execution result.
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func MakeReceipt(evm *vm.EVM, result *ExecutionResult, statedb *state.StateDB, blockNumber *big.Int, blockHash common.Hash, tx *types.Transaction, usedGas uint64, root []byte) *types.Receipt {
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// Create a new receipt for the transaction, storing the intermediate root and gas used
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// by the tx.
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receipt := &types.Receipt{Type: tx.Type(), PostState: root, CumulativeGasUsed: usedGas}
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if result.Failed() {
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receipt.Status = types.ReceiptStatusFailed
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} else {
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receipt.Status = types.ReceiptStatusSuccessful
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}
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receipt.TxHash = tx.Hash()
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receipt.GasUsed = result.UsedGas
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if tx.Type() == types.BlobTxType {
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receipt.BlobGasUsed = uint64(len(tx.BlobHashes()) * params.BlobTxBlobGasPerBlob)
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receipt.BlobGasPrice = evm.Context.BlobBaseFee
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}
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// If the transaction created a contract, store the creation address in the receipt.
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if tx.To() == nil {
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receipt.ContractAddress = crypto.CreateAddress(evm.TxContext.Origin, tx.Nonce())
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}
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// Merge the tx-local access event into the "block-local" one, in order to collect
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// all values, so that the witness can be built.
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if statedb.GetTrie().IsVerkle() {
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statedb.AccessEvents().Merge(evm.AccessEvents)
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}
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// Set the receipt logs and create the bloom filter.
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receipt.Logs = statedb.GetLogs(tx.Hash(), blockNumber.Uint64(), blockHash)
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receipt.Bloom = types.CreateBloom(types.Receipts{receipt})
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receipt.BlockHash = blockHash
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receipt.BlockNumber = blockNumber
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receipt.TransactionIndex = uint(statedb.TxIndex())
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return receipt
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}
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// ApplyTransaction attempts to apply a transaction to the given state database
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// and uses the input parameters for its environment. It returns the receipt
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// for the transaction, gas used and an error if the transaction failed,
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// indicating the block was invalid.
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func ApplyTransaction(config *params.ChainConfig, bc ChainContext, author *common.Address, gp *GasPool, statedb *state.StateDB, header *types.Header, tx *types.Transaction, usedGas *uint64, cfg vm.Config) (*types.Receipt, error) {
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msg, err := TransactionToMessage(tx, types.MakeSigner(config, header.Number, header.Time), header.BaseFee)
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if err != nil {
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return nil, err
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}
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// Create a new context to be used in the EVM environment
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blockContext := NewEVMBlockContext(header, bc, author)
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txContext := NewEVMTxContext(msg)
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vmenv := vm.NewEVM(blockContext, txContext, statedb, config, cfg)
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return ApplyTransactionWithEVM(msg, config, gp, statedb, header.Number, header.Hash(), tx, usedGas, vmenv)
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}
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// ProcessBeaconBlockRoot applies the EIP-4788 system call to the beacon block root
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// contract. This method is exported to be used in tests.
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func ProcessBeaconBlockRoot(beaconRoot common.Hash, vmenv *vm.EVM, statedb vm.StateDB) {
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if tracer := vmenv.Config.Tracer; tracer != nil {
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if tracer.OnSystemCallStart != nil {
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tracer.OnSystemCallStart()
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}
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if tracer.OnSystemCallEnd != nil {
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defer tracer.OnSystemCallEnd()
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}
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}
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msg := &Message{
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From: params.SystemAddress,
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GasLimit: 30_000_000,
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GasPrice: common.Big0,
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GasFeeCap: common.Big0,
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GasTipCap: common.Big0,
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To: ¶ms.BeaconRootsAddress,
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Data: beaconRoot[:],
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}
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vmenv.Reset(NewEVMTxContext(msg), statedb)
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statedb.AddAddressToAccessList(params.BeaconRootsAddress)
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_, _, _ = vmenv.Call(vm.AccountRef(msg.From), *msg.To, msg.Data, 30_000_000, common.U2560)
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statedb.Finalise(true)
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}
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// ProcessParentBlockHash stores the parent block hash in the history storage contract
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// as per EIP-2935.
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func ProcessParentBlockHash(prevHash common.Hash, vmenv *vm.EVM, statedb vm.StateDB) {
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if tracer := vmenv.Config.Tracer; tracer != nil {
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if tracer.OnSystemCallStart != nil {
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tracer.OnSystemCallStart()
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}
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if tracer.OnSystemCallEnd != nil {
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defer tracer.OnSystemCallEnd()
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}
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}
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msg := &Message{
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From: params.SystemAddress,
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GasLimit: 30_000_000,
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GasPrice: common.Big0,
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GasFeeCap: common.Big0,
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GasTipCap: common.Big0,
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To: ¶ms.HistoryStorageAddress,
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Data: prevHash.Bytes(),
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}
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vmenv.Reset(NewEVMTxContext(msg), statedb)
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statedb.AddAddressToAccessList(params.HistoryStorageAddress)
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_, _, _ = vmenv.Call(vm.AccountRef(msg.From), *msg.To, msg.Data, 30_000_000, common.U2560)
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statedb.Finalise(true)
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}
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// ProcessWithdrawalQueue calls the EIP-7002 withdrawal queue contract.
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// It returns the opaque request data returned by the contract.
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func ProcessWithdrawalQueue(vmenv *vm.EVM, statedb vm.StateDB) []byte {
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return processRequestsSystemCall(vmenv, statedb, 0x01, params.WithdrawalQueueAddress)
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}
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// ProcessConsolidationQueue calls the EIP-7251 consolidation queue contract.
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// It returns the opaque request data returned by the contract.
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func ProcessConsolidationQueue(vmenv *vm.EVM, statedb vm.StateDB) []byte {
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return processRequestsSystemCall(vmenv, statedb, 0x02, params.ConsolidationQueueAddress)
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}
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func processRequestsSystemCall(vmenv *vm.EVM, statedb vm.StateDB, requestType byte, addr common.Address) []byte {
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if tracer := vmenv.Config.Tracer; tracer != nil {
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if tracer.OnSystemCallStart != nil {
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tracer.OnSystemCallStart()
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}
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if tracer.OnSystemCallEnd != nil {
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defer tracer.OnSystemCallEnd()
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}
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}
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msg := &Message{
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From: params.SystemAddress,
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GasLimit: 30_000_000,
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GasPrice: common.Big0,
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GasFeeCap: common.Big0,
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GasTipCap: common.Big0,
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To: &addr,
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}
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vmenv.Reset(NewEVMTxContext(msg), statedb)
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statedb.AddAddressToAccessList(addr)
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ret, _, _ := vmenv.Call(vm.AccountRef(msg.From), *msg.To, msg.Data, 30_000_000, common.U2560)
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statedb.Finalise(true)
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// Create withdrawals requestsData with prefix 0x01
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requestsData := make([]byte, len(ret)+1)
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requestsData[0] = requestType
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copy(requestsData[1:], ret)
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return requestsData
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}
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// ParseDepositLogs extracts the EIP-6110 deposit values from logs emitted by
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// BeaconDepositContract.
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func ParseDepositLogs(logs []*types.Log, config *params.ChainConfig) ([]byte, error) {
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deposits := make([]byte, 1) // note: first byte is 0x00 (== deposit request type)
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for _, log := range logs {
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if log.Address == config.DepositContractAddress {
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request, err := types.DepositLogToRequest(log.Data)
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if err != nil {
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return nil, fmt.Errorf("unable to parse deposit data: %v", err)
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}
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deposits = append(deposits, request...)
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}
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}
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return deposits, nil
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}
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