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eth/catalyst: add timestamp checks to fcu and new payload and improve param checks (#28230)

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This PR introduces a few changes with respect to payload verification in fcu and new payload requests:

* First of all, it undoes the `verifyPayloadAttributes(..)` simplification I attempted in #27872. 
* Adds timestamp validation to fcu payload attributes [as required](https://github.com/ethereum/execution-apis/blob/main/src/engine/cancun.md#specification-1) (section 2) by the Engine API spec. 
* For the new payload methods, I also update the verification of the executable data. For `newPayloadV2`, it does not currently ensure that cancun values are `nil`. Which could make it possible to submit cancun payloads through it. 
* On `newPayloadV3` the same types of checks are added. All shanghai and cancun related fields in the executable data must be non-nil, with the addition that the timestamp is _only_ with cancun.
* Finally it updates a newly failing catalyst test to call the correct fcu and new payload methods depending on the fork.
This commit is contained in:
lightclient 2024-01-23 08:02:08 -07:00 committed by GitHub
parent 2dc74770a7
commit 98eaa57e6f
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GPG Key ID: B5690EEEBB952194
4 changed files with 128 additions and 48 deletions
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93
eth/catalyst/api.go
View File

@ -20,7 +20,6 @@ package catalyst
import (
"errors"
"fmt"
"math/big"
"sync"
"time"
@ -34,6 +33,7 @@ import (
"github.com/ethereum/go-ethereum/log"
"github.com/ethereum/go-ethereum/miner"
"github.com/ethereum/go-ethereum/node"
"github.com/ethereum/go-ethereum/params/forks"
"github.com/ethereum/go-ethereum/rpc"
)
@ -184,47 +184,43 @@ func (api *ConsensusAPI) ForkchoiceUpdatedV1(update engine.ForkchoiceStateV1, pa
}
// ForkchoiceUpdatedV2 is equivalent to V1 with the addition of withdrawals in the payload attributes.
func (api *ConsensusAPI) ForkchoiceUpdatedV2(update engine.ForkchoiceStateV1, payloadAttributes *engine.PayloadAttributes) (engine.ForkChoiceResponse, error) {
if payloadAttributes != nil {
if err := api.verifyPayloadAttributes(payloadAttributes); err != nil {
return engine.STATUS_INVALID, engine.InvalidParams.With(err)
func (api *ConsensusAPI) ForkchoiceUpdatedV2(update engine.ForkchoiceStateV1, params *engine.PayloadAttributes) (engine.ForkChoiceResponse, error) {
if params != nil {
if params.Withdrawals == nil {
return engine.STATUS_INVALID, engine.InvalidParams.With(errors.New("missing withdrawals"))
}
if params.BeaconRoot != nil {
return engine.STATUS_INVALID, engine.InvalidParams.With(errors.New("unexpected beacon root"))
}
if api.eth.BlockChain().Config().LatestFork(params.Timestamp) != forks.Shanghai {
return engine.STATUS_INVALID, engine.UnsupportedFork.With(errors.New("forkchoiceUpdatedV2 must only be called for shanghai payloads"))
}
}
return api.forkchoiceUpdated(update, payloadAttributes)
return api.forkchoiceUpdated(update, params)
}
// ForkchoiceUpdatedV3 is equivalent to V2 with the addition of parent beacon block root in the payload attributes.
func (api *ConsensusAPI) ForkchoiceUpdatedV3(update engine.ForkchoiceStateV1, payloadAttributes *engine.PayloadAttributes) (engine.ForkChoiceResponse, error) {
if payloadAttributes != nil {
if err := api.verifyPayloadAttributes(payloadAttributes); err != nil {
return engine.STATUS_INVALID, engine.InvalidParams.With(err)
func (api *ConsensusAPI) ForkchoiceUpdatedV3(update engine.ForkchoiceStateV1, params *engine.PayloadAttributes) (engine.ForkChoiceResponse, error) {
if params != nil {
// TODO(matt): according to https://github.com/ethereum/execution-apis/pull/498,
// payload attributes that are invalid should return error
// engine.InvalidPayloadAttributes. Once hive updates this, we should update
// on our end.
if params.Withdrawals == nil {
return engine.STATUS_INVALID, engine.InvalidParams.With(errors.New("missing withdrawals"))
}
if params.BeaconRoot == nil {
return engine.STATUS_INVALID, engine.InvalidParams.With(errors.New("missing beacon root"))
}
if api.eth.BlockChain().Config().LatestFork(params.Timestamp) != forks.Cancun {
return engine.STATUS_INVALID, engine.UnsupportedFork.With(errors.New("forkchoiceUpdatedV3 must only be called for cancun payloads"))
}
}
return api.forkchoiceUpdated(update, payloadAttributes)
}
func (api *ConsensusAPI) verifyPayloadAttributes(attr *engine.PayloadAttributes) error {
c := api.eth.BlockChain().Config()
// Verify withdrawals attribute for Shanghai.
if err := checkAttribute(c.IsShanghai, attr.Withdrawals != nil, c.LondonBlock, attr.Timestamp); err != nil {
return fmt.Errorf("invalid withdrawals: %w", err)
}
// Verify beacon root attribute for Cancun.
if err := checkAttribute(c.IsCancun, attr.BeaconRoot != nil, c.LondonBlock, attr.Timestamp); err != nil {
return fmt.Errorf("invalid parent beacon block root: %w", err)
}
return nil
}
func checkAttribute(active func(*big.Int, uint64) bool, exists bool, block *big.Int, time uint64) error {
if active(block, time) && !exists {
return errors.New("fork active, missing expected attribute")
}
if !active(block, time) && exists {
return errors.New("fork inactive, unexpected attribute set")
}
return nil
// TODO(matt): the spec requires that fcu is applied when called on a valid
// hash, even if params are wrong. To do this we need to split up
// forkchoiceUpdate into a function that only updates the head and then a
// function that kicks off block construction.
return api.forkchoiceUpdated(update, params)
}
func (api *ConsensusAPI) forkchoiceUpdated(update engine.ForkchoiceStateV1, payloadAttributes *engine.PayloadAttributes) (engine.ForkChoiceResponse, error) {
@ -457,27 +453,39 @@ func (api *ConsensusAPI) NewPayloadV1(params engine.ExecutableData) (engine.Payl
// NewPayloadV2 creates an Eth1 block, inserts it in the chain, and returns the status of the chain.
func (api *ConsensusAPI) NewPayloadV2(params engine.ExecutableData) (engine.PayloadStatusV1, error) {
if api.eth.BlockChain().Config().IsShanghai(new(big.Int).SetUint64(params.Number), params.Timestamp) {
if api.eth.BlockChain().Config().IsCancun(api.eth.BlockChain().Config().LondonBlock, params.Timestamp) {
return engine.PayloadStatusV1{Status: engine.INVALID}, engine.InvalidParams.With(errors.New("can't use new payload v2 post-shanghai"))
}
if api.eth.BlockChain().Config().LatestFork(params.Timestamp) == forks.Shanghai {
if params.Withdrawals == nil {
return engine.PayloadStatusV1{Status: engine.INVALID}, engine.InvalidParams.With(errors.New("nil withdrawals post-shanghai"))
}
} else if params.Withdrawals != nil {
return engine.PayloadStatusV1{Status: engine.INVALID}, engine.InvalidParams.With(errors.New("non-nil withdrawals pre-shanghai"))
} else {
if params.Withdrawals != nil {
return engine.PayloadStatusV1{Status: engine.INVALID}, engine.InvalidParams.With(errors.New("non-nil withdrawals pre-shanghai"))
}
}
if api.eth.BlockChain().Config().IsCancun(new(big.Int).SetUint64(params.Number), params.Timestamp) {
return engine.PayloadStatusV1{Status: engine.INVALID}, engine.InvalidParams.With(errors.New("newPayloadV2 called post-cancun"))
if params.ExcessBlobGas != nil {
return engine.PayloadStatusV1{Status: engine.INVALID}, engine.InvalidParams.With(errors.New("non-nil excessBlobGas pre-cancun"))
}
if params.BlobGasUsed != nil {
return engine.PayloadStatusV1{Status: engine.INVALID}, engine.InvalidParams.With(errors.New("non-nil params.BlobGasUsed pre-cancun"))
}
return api.newPayload(params, nil, nil)
}
// NewPayloadV3 creates an Eth1 block, inserts it in the chain, and returns the status of the chain.
func (api *ConsensusAPI) NewPayloadV3(params engine.ExecutableData, versionedHashes []common.Hash, beaconRoot *common.Hash) (engine.PayloadStatusV1, error) {
if params.Withdrawals == nil {
return engine.PayloadStatusV1{Status: engine.INVALID}, engine.InvalidParams.With(errors.New("nil withdrawals post-shanghai"))
}
if params.ExcessBlobGas == nil {
return engine.PayloadStatusV1{Status: engine.INVALID}, engine.InvalidParams.With(errors.New("nil excessBlobGas post-cancun"))
}
if params.BlobGasUsed == nil {
return engine.PayloadStatusV1{Status: engine.INVALID}, engine.InvalidParams.With(errors.New("nil params.BlobGasUsed post-cancun"))
}
if versionedHashes == nil {
return engine.PayloadStatusV1{Status: engine.INVALID}, engine.InvalidParams.With(errors.New("nil versionedHashes post-cancun"))
}
@ -485,10 +493,9 @@ func (api *ConsensusAPI) NewPayloadV3(params engine.ExecutableData, versionedHas
return engine.PayloadStatusV1{Status: engine.INVALID}, engine.InvalidParams.With(errors.New("nil parentBeaconBlockRoot post-cancun"))
}
if !api.eth.BlockChain().Config().IsCancun(new(big.Int).SetUint64(params.Number), params.Timestamp) {
return engine.PayloadStatusV1{Status: engine.INVALID}, engine.UnsupportedFork.With(errors.New("newPayloadV3 called pre-cancun"))
if api.eth.BlockChain().Config().LatestFork(params.Timestamp) != forks.Cancun {
return engine.PayloadStatusV1{Status: engine.INVALID}, engine.UnsupportedFork.With(errors.New("newPayloadV3 must only be called for cancun payloads"))
}
return api.newPayload(params, versionedHashes, beaconRoot)
}

23
eth/catalyst/api_test.go
View File

@ -1237,7 +1237,15 @@ func TestNilWithdrawals(t *testing.T) {
}
for _, test := range tests {
_, err := api.ForkchoiceUpdatedV2(fcState, &test.blockParams)
var (
err error
shanghai = genesis.Config.IsShanghai(genesis.Config.LondonBlock, test.blockParams.Timestamp)
)
if !shanghai {
_, err = api.ForkchoiceUpdatedV1(fcState, &test.blockParams)
} else {
_, err = api.ForkchoiceUpdatedV2(fcState, &test.blockParams)
}
if test.wantErr {
if err == nil {
t.Fatal("wanted error on fcuv2 with invalid withdrawals")
@ -1254,14 +1262,19 @@ func TestNilWithdrawals(t *testing.T) {
Timestamp: test.blockParams.Timestamp,
FeeRecipient: test.blockParams.SuggestedFeeRecipient,
Random: test.blockParams.Random,
BeaconRoot: test.blockParams.BeaconRoot,
}).Id()
execData, err := api.GetPayloadV2(payloadID)
if err != nil {
t.Fatalf("error getting payload, err=%v", err)
}
if status, err := api.NewPayloadV2(*execData.ExecutionPayload); err != nil {
t.Fatalf("error validating payload: %v", err)
var status engine.PayloadStatusV1
if !shanghai {
status, err = api.NewPayloadV1(*execData.ExecutionPayload)
} else {
status, err = api.NewPayloadV2(*execData.ExecutionPayload)
}
if err != nil {
t.Fatalf("error validating payload: %v", err.(*engine.EngineAPIError).ErrorData())
} else if status.Status != engine.VALID {
t.Fatalf("invalid payload")
}
@ -1587,7 +1600,7 @@ func TestParentBeaconBlockRoot(t *testing.T) {
fcState := engine.ForkchoiceStateV1{
HeadBlockHash: parent.Hash(),
}
resp, err := api.ForkchoiceUpdatedV2(fcState, &blockParams)
resp, err := api.ForkchoiceUpdatedV3(fcState, &blockParams)
if err != nil {
t.Fatalf("error preparing payload, err=%v", err.(*engine.EngineAPIError).ErrorData())
}

18
params/config.go
View File

@ -21,6 +21,7 @@ import (
"math/big"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/params/forks"
)
// Genesis hashes to enforce below configs on.
@ -750,6 +751,23 @@ func (c *ChainConfig) ElasticityMultiplier() uint64 {
return DefaultElasticityMultiplier
}
// LatestFork returns the latest time-based fork that would be active for the given time.
func (c *ChainConfig) LatestFork(time uint64) forks.Fork {
// Assume last non-time-based fork has passed.
london := c.LondonBlock
switch {
case c.IsPrague(london, time):
return forks.Prague
case c.IsCancun(london, time):
return forks.Cancun
case c.IsShanghai(london, time):
return forks.Shanghai
default:
return forks.Paris
}
}
// isForkBlockIncompatible returns true if a fork scheduled at block s1 cannot be
// rescheduled to block s2 because head is already past the fork.
func isForkBlockIncompatible(s1, s2, head *big.Int) bool {

42
params/forks/forks.go Normal file
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@ -0,0 +1,42 @@
// Copyright 2023 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 forks
// Fork is a numerical identifier of specific network upgrades (forks).
type Fork int
const (
Frontier = iota
FrontierThawing
Homestead
DAO
TangerineWhistle
SpuriousDragon
Byzantium
Constantinople
Petersburg
Istanbul
MuirGlacier
Berlin
London
ArrowGlacier
GrayGlacier
Paris
Shanghai
Cancun
Prague
)