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// Copyright (C) 2019-2023 Algorand, Inc.
// This file is part of go-algorand
//
// go-algorand is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// go-algorand 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 Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with go-algorand. If not, see <https://www.gnu.org/licenses/>.
package apply
import (
"errors"
"testing"
"github.com/stretchr/testify/require"
"github.com/algorand/go-algorand/config"
"github.com/algorand/go-algorand/crypto/stateproof"
"github.com/algorand/go-algorand/data/basics"
"github.com/algorand/go-algorand/data/bookkeeping"
"github.com/algorand/go-algorand/data/stateproofmsg"
"github.com/algorand/go-algorand/data/transactions"
"github.com/algorand/go-algorand/ledger/ledgercore"
"github.com/algorand/go-algorand/protocol"
"github.com/algorand/go-algorand/test/partitiontest"
)
var ErrVerificationContextNotFound = errors.New("requested state proof verification data not found")
type stateProofApplierMock struct {
spNext basics.Round
blocks map[basics.Round]bookkeeping.BlockHeader
blockErr map[basics.Round]error
stateProofVerification map[basics.Round]*ledgercore.StateProofVerificationContext
version protocol.ConsensusVersion
}
func (s *stateProofApplierMock) BlockHdr(rnd basics.Round) (bookkeeping.BlockHeader, error) {
err, hit := s.blockErr[rnd]
if hit {
return bookkeeping.BlockHeader{}, err
}
hdr := s.blocks[rnd] // default struct is fine if nothing found
return hdr, nil
}
func (s *stateProofApplierMock) GetStateProofNextRound() basics.Round {
return s.spNext
}
func (s *stateProofApplierMock) SetStateProofNextRound(rnd basics.Round) {
s.spNext = rnd
}
func (s *stateProofApplierMock) GetStateProofVerificationContext(stateProofLastAttestedRound basics.Round) (*ledgercore.StateProofVerificationContext, error) {
element, exists := s.stateProofVerification[stateProofLastAttestedRound]
if !exists {
return nil, ErrVerificationContextNotFound
}
return element, nil
}
func (s *stateProofApplierMock) ConsensusParams() config.ConsensusParams {
return config.Consensus[s.version]
}
func TestApplyStateProofV34(t *testing.T) {
partitiontest.PartitionTest(t)
a := require.New(t)
var spType protocol.StateProofType
var stateProof stateproof.StateProof
var atRound basics.Round
var validate bool
msg := stateproofmsg.Message{}
const version = protocol.ConsensusV34
blocks := make(map[basics.Round]bookkeeping.BlockHeader)
blockErr := make(map[basics.Round]error)
applier := &stateProofApplierMock{
spNext: 0,
blocks: blocks,
blockErr: blockErr,
stateProofVerification: nil,
version: version,
}
spType = protocol.StateProofType(1234) // bad stateproof type
stateProofTx := transactions.StateProofTxnFields{
StateProofType: spType,
StateProof: stateProof,
Message: msg,
}
err := StateProof(stateProofTx, atRound, applier, validate)
a.ErrorIs(err, ErrStateProofTypeNotSupported)
stateProofTx.StateProofType = protocol.StateProofBasic
// stateproof txn doesn't confirm the next state proof round. expected is in the past
validate = true
stateProofTx.Message.LastAttestedRound = uint64(16)
applier.SetStateProofNextRound(8)
err = StateProof(stateProofTx, atRound, applier, validate)
a.ErrorIs(err, ErrExpectedDifferentStateProofRound)
applier.SetStateProofNextRound(32)
// stateproof txn doesn't confirm the next state proof round. expected is in the future
validate = true
stateProofTx.Message.LastAttestedRound = uint64(16)
applier.SetStateProofNextRound(32)
err = StateProof(stateProofTx, atRound, applier, validate)
a.ErrorIs(err, ErrExpectedDifferentStateProofRound)
// no atRound and lastAttested block
stateProofTx.Message.LastAttestedRound = 32
noBlockErr := errors.New("no block")
blockErr[atRound] = noBlockErr
blockErr[basics.Round(stateProofTx.Message.LastAttestedRound)] = noBlockErr
err = StateProof(stateProofTx, atRound, applier, validate)
a.ErrorIs(err, noBlockErr)
delete(blockErr, atRound)
atRoundBlock := bookkeeping.BlockHeader{}
atRoundBlock.CurrentProtocol = version
blocks[atRound] = atRoundBlock
// no spRnd block
noBlockErr = errors.New("no block")
blockErr[32] = noBlockErr
stateProofTx.Message.LastAttestedRound = 32
err = StateProof(stateProofTx, atRound, applier, validate)
a.ErrorIs(err, noBlockErr)
// no votersRnd block
// this is slightly a mess of things that don't quite line up with likely usage
validate = true
var spHdr bookkeeping.BlockHeader
spHdr.CurrentProtocol = "TestCowStateProof"
spHdr.Round = 1
proto := config.Consensus[spHdr.CurrentProtocol]
proto.StateProofInterval = 2
config.Consensus[spHdr.CurrentProtocol] = proto
blocks[spHdr.Round] = spHdr
spHdr.Round = 15
blocks[spHdr.Round] = spHdr
stateProofTx.Message.LastAttestedRound = uint64(spHdr.Round)
applier.SetStateProofNextRound(15)
blockErr[13] = noBlockErr
err = StateProof(stateProofTx, atRound, applier, validate)
a.Contains(err.Error(), "no block")
delete(blockErr, 13)
// check the happy flow - we should fail only on crypto
atRound = 800
spHdr = bookkeeping.BlockHeader{}
spHdr.CurrentProtocol = version
blocks[basics.Round(2*config.Consensus[version].StateProofInterval)] = spHdr
votersHdr := bookkeeping.BlockHeader{}
votersHdr.CurrentProtocol = version
stateproofTracking := bookkeeping.StateProofTrackingData{
StateProofVotersCommitment: []byte{0x1}[:],
StateProofOnlineTotalWeight: basics.MicroAlgos{Raw: 5},
}
votersHdr.StateProofTracking = make(map[protocol.StateProofType]bookkeeping.StateProofTrackingData)
votersHdr.StateProofTracking[protocol.StateProofBasic] = stateproofTracking
blocks[basics.Round(config.Consensus[version].StateProofInterval)] = votersHdr
atRoundBlock = bookkeeping.BlockHeader{}
atRoundBlock.CurrentProtocol = version
blocks[atRound] = atRoundBlock
stateProofTx.Message.LastAttestedRound = 2 * config.Consensus[version].StateProofInterval
stateProofTx.StateProof.SignedWeight = 100
applier.SetStateProofNextRound(basics.Round(2 * config.Consensus[version].StateProofInterval))
err = StateProof(stateProofTx, atRound, applier, validate)
a.Contains(err.Error(), "crypto error")
}
func TestApplyStateProof(t *testing.T) {
partitiontest.PartitionTest(t)
a := require.New(t)
var spType protocol.StateProofType
var stateProof stateproof.StateProof
atRound := basics.Round(600)
var validate bool
msg := stateproofmsg.Message{}
blocks := make(map[basics.Round]bookkeeping.BlockHeader)
blockErr := make(map[basics.Round]error)
stateProofVerification := make(map[basics.Round]*ledgercore.StateProofVerificationContext)
applier := &stateProofApplierMock{
spNext: 0,
blocks: blocks,
blockErr: blockErr,
stateProofVerification: stateProofVerification,
version: protocol.ConsensusCurrentVersion,
}
spType = protocol.StateProofType(1234) // bad stateproof type
stateProofTx := transactions.StateProofTxnFields{
StateProofType: spType,
StateProof: stateProof,
Message: msg,
}
err := StateProof(stateProofTx, atRound, applier, validate)
a.ErrorIs(err, ErrStateProofTypeNotSupported)
stateProofTx.StateProofType = protocol.StateProofBasic
// stateproof txn doesn't confirm the next state proof round. expected is in the past
validate = true
stateProofTx.Message.LastAttestedRound = uint64(16)
applier.SetStateProofNextRound(8)
err = StateProof(stateProofTx, atRound, applier, validate)
a.ErrorIs(err, ErrExpectedDifferentStateProofRound)
applier.SetStateProofNextRound(32)
// stateproof txn doesn't confirm the next state proof round. expected is in the future
validate = true
stateProofTx.Message.LastAttestedRound = uint64(16)
applier.SetStateProofNextRound(32)
err = StateProof(stateProofTx, atRound, applier, validate)
a.ErrorIs(err, ErrExpectedDifferentStateProofRound)
atRoundBlock := bookkeeping.BlockHeader{}
atRoundBlock.CurrentProtocol = protocol.ConsensusCurrentVersion
blocks[atRound] = atRoundBlock
validate = true
// no Verification Context for rounds 32
stateProofTx.Message.LastAttestedRound = 32
err = StateProof(stateProofTx, atRound, applier, validate)
a.ErrorIs(err, ErrVerificationContextNotFound)
delete(blockErr, atRound)
// the behavior has changed and we no longer require the voters blockheader to verify the transaction
// still, this test should assure the error returned is the one expected and not "no block"
noBlockErr := errors.New("no block")
// removing blocks for the ledger so if apply.stateproof uses the tracker it should pass
applier.SetStateProofNextRound(512)
blockErr[512] = noBlockErr
blockErr[256] = noBlockErr
stateProofTx.Message.LastAttestedRound = 512
stateProofTx.StateProof.SignedWeight = 100
stateProofVerification[basics.Round(stateProofTx.Message.LastAttestedRound)] = &ledgercore.StateProofVerificationContext{
LastAttestedRound: basics.Round(stateProofTx.Message.LastAttestedRound),
VotersCommitment: []byte{0x1}[:],
OnlineTotalWeight: basics.MicroAlgos{Raw: 5},
Version: protocol.ConsensusCurrentVersion,
}
// crypto verification should fail since it is not a valid stateproof
err = StateProof(stateProofTx, atRound, applier, validate)
a.Error(err)
a.Contains(err.Error(), "crypto error")
a.Equal(basics.Round(512), applier.GetStateProofNextRound())
// transaction should be applied without stateproof validation (no context, blockheader or valid stateproof needed as it represents a node catching up)
err = StateProof(stateProofTx, atRound, applier, false)
a.NoError(err)
// make sure that the StateProofNext was updated correctly after applying
a.Equal(basics.Round(512+config.Consensus[protocol.ConsensusCurrentVersion].StateProofInterval), applier.GetStateProofNextRound())
}
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