ed8fd0ac09
* all: add stateless verifications * all: simplify witness and integrate it into live geth --------- Co-authored-by: Péter Szilágyi <peterke@gmail.com>
74 lines
3.2 KiB
Go
74 lines
3.2 KiB
Go
// Copyright 2024 The go-ethereum Authors
|
|
// This file is part of the go-ethereum library.
|
|
//
|
|
// The go-ethereum library is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU Lesser General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// The go-ethereum library is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU Lesser General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Lesser General Public License
|
|
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
package core
|
|
|
|
import (
|
|
"github.com/ethereum/go-ethereum/common"
|
|
"github.com/ethereum/go-ethereum/common/lru"
|
|
"github.com/ethereum/go-ethereum/consensus/beacon"
|
|
"github.com/ethereum/go-ethereum/consensus/ethash"
|
|
"github.com/ethereum/go-ethereum/core/state"
|
|
"github.com/ethereum/go-ethereum/core/stateless"
|
|
"github.com/ethereum/go-ethereum/core/types"
|
|
"github.com/ethereum/go-ethereum/core/vm"
|
|
"github.com/ethereum/go-ethereum/params"
|
|
"github.com/ethereum/go-ethereum/trie"
|
|
"github.com/ethereum/go-ethereum/triedb"
|
|
)
|
|
|
|
// ExecuteStateless runs a stateless execution based on a witness, verifies
|
|
// everything it can locally and returns the two computed fields that need the
|
|
// other side to explicitly check.
|
|
//
|
|
// This method is a bit of a sore thumb here, but:
|
|
// - It cannot be placed in core/stateless, because state.New prodces a circular dep
|
|
// - It cannot be placed outside of core, because it needs to construct a dud headerchain
|
|
//
|
|
// TODO(karalabe): Would be nice to resolve both issues above somehow and move it.
|
|
func ExecuteStateless(config *params.ChainConfig, witness *stateless.Witness) (common.Hash, common.Hash, error) {
|
|
// Create and populate the state database to serve as the stateless backend
|
|
memdb := witness.MakeHashDB()
|
|
|
|
db, err := state.New(witness.Root(), state.NewDatabaseWithConfig(memdb, triedb.HashDefaults), nil)
|
|
if err != nil {
|
|
return common.Hash{}, common.Hash{}, err
|
|
}
|
|
// Create a blockchain that is idle, but can be used to access headers through
|
|
chain := &HeaderChain{
|
|
config: config,
|
|
chainDb: memdb,
|
|
headerCache: lru.NewCache[common.Hash, *types.Header](256),
|
|
engine: beacon.New(ethash.NewFaker()),
|
|
}
|
|
processor := NewStateProcessor(config, chain)
|
|
validator := NewBlockValidator(config, nil) // No chain, we only validate the state, not the block
|
|
|
|
// Run the stateless blocks processing and self-validate certain fields
|
|
receipts, _, usedGas, err := processor.Process(witness.Block, db, vm.Config{})
|
|
if err != nil {
|
|
return common.Hash{}, common.Hash{}, err
|
|
}
|
|
if err = validator.ValidateState(witness.Block, db, receipts, usedGas, true); err != nil {
|
|
return common.Hash{}, common.Hash{}, err
|
|
}
|
|
// Almost everything validated, but receipt and state root needs to be returned
|
|
receiptRoot := types.DeriveSha(receipts, trie.NewStackTrie(nil))
|
|
stateRoot := db.IntermediateRoot(config.IsEIP158(witness.Block.Number()))
|
|
|
|
return receiptRoot, stateRoot, nil
|
|
}
|