You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
508 lines
16 KiB
508 lines
16 KiB
package evidence_test
|
|
|
|
import (
|
|
"context"
|
|
"testing"
|
|
"time"
|
|
|
|
"github.com/stretchr/testify/assert"
|
|
"github.com/stretchr/testify/mock"
|
|
"github.com/stretchr/testify/require"
|
|
|
|
dbm "github.com/tendermint/tm-db"
|
|
|
|
"github.com/tendermint/tendermint/evidence"
|
|
"github.com/tendermint/tendermint/evidence/mocks"
|
|
"github.com/tendermint/tendermint/libs/log"
|
|
tmproto "github.com/tendermint/tendermint/proto/tendermint/types"
|
|
sm "github.com/tendermint/tendermint/state"
|
|
smmocks "github.com/tendermint/tendermint/state/mocks"
|
|
"github.com/tendermint/tendermint/store"
|
|
"github.com/tendermint/tendermint/types"
|
|
"github.com/tendermint/tendermint/version"
|
|
)
|
|
|
|
const evidenceChainID = "test_chain"
|
|
|
|
var (
|
|
defaultEvidenceTime = time.Date(2019, 1, 1, 0, 0, 0, 0, time.UTC)
|
|
defaultEvidenceMaxBytes int64 = 1000
|
|
)
|
|
|
|
func TestEvidencePoolBasic(t *testing.T) {
|
|
var (
|
|
height = int64(1)
|
|
stateStore = &smmocks.Store{}
|
|
evidenceDB = dbm.NewMemDB()
|
|
blockStore = &mocks.BlockStore{}
|
|
)
|
|
|
|
valSet, privVals := types.RandValidatorSet(1, 10)
|
|
|
|
blockStore.On("LoadBlockMeta", mock.AnythingOfType("int64")).Return(
|
|
&types.BlockMeta{Header: types.Header{Time: defaultEvidenceTime}},
|
|
)
|
|
stateStore.On("LoadValidators", mock.AnythingOfType("int64")).Return(valSet, nil)
|
|
stateStore.On("Load").Return(createState(height+1, valSet), nil)
|
|
|
|
pool, err := evidence.NewPool(log.TestingLogger(), evidenceDB, stateStore, blockStore)
|
|
require.NoError(t, err)
|
|
|
|
// evidence not seen yet:
|
|
evs, size := pool.PendingEvidence(defaultEvidenceMaxBytes)
|
|
require.Equal(t, 0, len(evs))
|
|
require.Zero(t, size)
|
|
|
|
ev := types.NewMockDuplicateVoteEvidenceWithValidator(height, defaultEvidenceTime, privVals[0], evidenceChainID)
|
|
|
|
// good evidence
|
|
evAdded := make(chan struct{})
|
|
go func() {
|
|
<-pool.EvidenceWaitChan()
|
|
close(evAdded)
|
|
}()
|
|
|
|
// evidence seen but not yet committed:
|
|
require.NoError(t, pool.AddEvidence(ev))
|
|
|
|
select {
|
|
case <-evAdded:
|
|
case <-time.After(5 * time.Second):
|
|
t.Fatal("evidence was not added to list after 5s")
|
|
}
|
|
|
|
next := pool.EvidenceFront()
|
|
require.Equal(t, ev, next.Value.(types.Evidence))
|
|
|
|
const evidenceBytes int64 = 372
|
|
evs, size = pool.PendingEvidence(evidenceBytes)
|
|
require.Equal(t, 1, len(evs))
|
|
require.Equal(t, evidenceBytes, size) // check that the size of the single evidence in bytes is correct
|
|
|
|
// shouldn't be able to add evidence twice
|
|
require.NoError(t, pool.AddEvidence(ev))
|
|
evs, _ = pool.PendingEvidence(defaultEvidenceMaxBytes)
|
|
require.Equal(t, 1, len(evs))
|
|
}
|
|
|
|
// Tests inbound evidence for the right time and height
|
|
func TestAddExpiredEvidence(t *testing.T) {
|
|
var (
|
|
val = types.NewMockPV()
|
|
height = int64(30)
|
|
stateStore = initializeValidatorState(t, val, height)
|
|
evidenceDB = dbm.NewMemDB()
|
|
blockStore = &mocks.BlockStore{}
|
|
expiredEvidenceTime = time.Date(2018, 1, 1, 0, 0, 0, 0, time.UTC)
|
|
expiredHeight = int64(2)
|
|
)
|
|
|
|
blockStore.On("LoadBlockMeta", mock.AnythingOfType("int64")).Return(func(h int64) *types.BlockMeta {
|
|
if h == height || h == expiredHeight {
|
|
return &types.BlockMeta{Header: types.Header{Time: defaultEvidenceTime}}
|
|
}
|
|
return &types.BlockMeta{Header: types.Header{Time: expiredEvidenceTime}}
|
|
})
|
|
|
|
pool, err := evidence.NewPool(log.TestingLogger(), evidenceDB, stateStore, blockStore)
|
|
require.NoError(t, err)
|
|
|
|
testCases := []struct {
|
|
evHeight int64
|
|
evTime time.Time
|
|
expErr bool
|
|
evDescription string
|
|
}{
|
|
{height, defaultEvidenceTime, false, "valid evidence"},
|
|
{expiredHeight, defaultEvidenceTime, false, "valid evidence (despite old height)"},
|
|
{height - 1, expiredEvidenceTime, false, "valid evidence (despite old time)"},
|
|
{expiredHeight - 1, expiredEvidenceTime, true,
|
|
"evidence from height 1 (created at: 2019-01-01 00:00:00 +0000 UTC) is too old"},
|
|
{height, defaultEvidenceTime.Add(1 * time.Minute), true, "evidence time and block time is different"},
|
|
}
|
|
|
|
for _, tc := range testCases {
|
|
tc := tc
|
|
|
|
t.Run(tc.evDescription, func(t *testing.T) {
|
|
ev := types.NewMockDuplicateVoteEvidenceWithValidator(tc.evHeight, tc.evTime, val, evidenceChainID)
|
|
err := pool.AddEvidence(ev)
|
|
if tc.expErr {
|
|
require.Error(t, err)
|
|
} else {
|
|
require.NoError(t, err)
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
func TestReportConflictingVotes(t *testing.T) {
|
|
var height int64 = 10
|
|
|
|
pool, pv := defaultTestPool(t, height)
|
|
val := types.NewValidator(pv.PrivKey.PubKey(), 10)
|
|
ev := types.NewMockDuplicateVoteEvidenceWithValidator(height+1, defaultEvidenceTime, pv, evidenceChainID)
|
|
|
|
pool.ReportConflictingVotes(ev.VoteA, ev.VoteB)
|
|
|
|
// shouldn't be able to submit the same evidence twice
|
|
pool.ReportConflictingVotes(ev.VoteA, ev.VoteB)
|
|
|
|
// evidence from consensus should not be added immediately but reside in the consensus buffer
|
|
evList, evSize := pool.PendingEvidence(defaultEvidenceMaxBytes)
|
|
require.Empty(t, evList)
|
|
require.Zero(t, evSize)
|
|
|
|
next := pool.EvidenceFront()
|
|
require.Nil(t, next)
|
|
|
|
// move to next height and update state and evidence pool
|
|
state := pool.State()
|
|
state.LastBlockHeight++
|
|
state.LastBlockTime = ev.Time()
|
|
state.LastValidators = types.NewValidatorSet([]*types.Validator{val})
|
|
pool.Update(state, []types.Evidence{})
|
|
|
|
// should be able to retrieve evidence from pool
|
|
evList, _ = pool.PendingEvidence(defaultEvidenceMaxBytes)
|
|
require.Equal(t, []types.Evidence{ev}, evList)
|
|
}
|
|
|
|
func TestEvidencePoolUpdate(t *testing.T) {
|
|
height := int64(21)
|
|
pool, val := defaultTestPool(t, height)
|
|
state := pool.State()
|
|
|
|
// create two lots of old evidence that we expect to be pruned when we update
|
|
prunedEv := types.NewMockDuplicateVoteEvidenceWithValidator(
|
|
1,
|
|
defaultEvidenceTime.Add(1*time.Minute),
|
|
val,
|
|
evidenceChainID,
|
|
)
|
|
|
|
notPrunedEv := types.NewMockDuplicateVoteEvidenceWithValidator(
|
|
2,
|
|
defaultEvidenceTime.Add(2*time.Minute),
|
|
val,
|
|
evidenceChainID,
|
|
)
|
|
|
|
require.NoError(t, pool.AddEvidence(prunedEv))
|
|
require.NoError(t, pool.AddEvidence(notPrunedEv))
|
|
|
|
ev := types.NewMockDuplicateVoteEvidenceWithValidator(
|
|
height,
|
|
defaultEvidenceTime.Add(21*time.Minute),
|
|
val,
|
|
evidenceChainID,
|
|
)
|
|
lastCommit := makeCommit(height, val.PrivKey.PubKey().Address())
|
|
block := types.MakeBlock(height+1, []types.Tx{}, lastCommit, []types.Evidence{ev})
|
|
|
|
// update state (partially)
|
|
state.LastBlockHeight = height + 1
|
|
state.LastBlockTime = defaultEvidenceTime.Add(22 * time.Minute)
|
|
|
|
evList, _ := pool.PendingEvidence(2 * defaultEvidenceMaxBytes)
|
|
require.Equal(t, 2, len(evList))
|
|
|
|
require.Equal(t, uint32(2), pool.Size())
|
|
|
|
require.NoError(t, pool.CheckEvidence(types.EvidenceList{ev}))
|
|
|
|
evList, _ = pool.PendingEvidence(3 * defaultEvidenceMaxBytes)
|
|
require.Equal(t, 3, len(evList))
|
|
|
|
require.Equal(t, uint32(3), pool.Size())
|
|
|
|
pool.Update(state, block.Evidence.Evidence)
|
|
|
|
// a) Update marks evidence as committed so pending evidence should be empty
|
|
evList, _ = pool.PendingEvidence(defaultEvidenceMaxBytes)
|
|
require.Equal(t, []types.Evidence{notPrunedEv}, evList)
|
|
|
|
// b) If we try to check this evidence again it should fail because it has already been committed
|
|
err := pool.CheckEvidence(types.EvidenceList{ev})
|
|
if assert.Error(t, err) {
|
|
assert.Equal(t, "evidence was already committed", err.(*types.ErrInvalidEvidence).Reason.Error())
|
|
}
|
|
}
|
|
|
|
func TestVerifyPendingEvidencePasses(t *testing.T) {
|
|
var height int64 = 1
|
|
|
|
pool, val := defaultTestPool(t, height)
|
|
ev := types.NewMockDuplicateVoteEvidenceWithValidator(
|
|
height,
|
|
defaultEvidenceTime.Add(1*time.Minute),
|
|
val,
|
|
evidenceChainID,
|
|
)
|
|
|
|
require.NoError(t, pool.AddEvidence(ev))
|
|
require.NoError(t, pool.CheckEvidence(types.EvidenceList{ev}))
|
|
}
|
|
|
|
func TestVerifyDuplicatedEvidenceFails(t *testing.T) {
|
|
var height int64 = 1
|
|
pool, val := defaultTestPool(t, height)
|
|
ev := types.NewMockDuplicateVoteEvidenceWithValidator(
|
|
height,
|
|
defaultEvidenceTime.Add(1*time.Minute),
|
|
val,
|
|
evidenceChainID,
|
|
)
|
|
|
|
err := pool.CheckEvidence(types.EvidenceList{ev, ev})
|
|
if assert.Error(t, err) {
|
|
assert.Equal(t, "duplicate evidence", err.(*types.ErrInvalidEvidence).Reason.Error())
|
|
}
|
|
}
|
|
|
|
// check that valid light client evidence is correctly validated and stored in
|
|
// evidence pool
|
|
func TestCheckEvidenceWithLightClientAttack(t *testing.T) {
|
|
var (
|
|
nValidators = 5
|
|
validatorPower int64 = 10
|
|
height int64 = 10
|
|
)
|
|
|
|
conflictingVals, conflictingPrivVals := types.RandValidatorSet(nValidators, validatorPower)
|
|
trustedHeader := makeHeaderRandom(height)
|
|
trustedHeader.Time = defaultEvidenceTime
|
|
|
|
conflictingHeader := makeHeaderRandom(height)
|
|
conflictingHeader.ValidatorsHash = conflictingVals.Hash()
|
|
|
|
trustedHeader.ValidatorsHash = conflictingHeader.ValidatorsHash
|
|
trustedHeader.NextValidatorsHash = conflictingHeader.NextValidatorsHash
|
|
trustedHeader.ConsensusHash = conflictingHeader.ConsensusHash
|
|
trustedHeader.AppHash = conflictingHeader.AppHash
|
|
trustedHeader.LastResultsHash = conflictingHeader.LastResultsHash
|
|
|
|
// For simplicity we are simulating a duplicate vote attack where all the
|
|
// validators in the conflictingVals set voted twice.
|
|
blockID := makeBlockID(conflictingHeader.Hash(), 1000, []byte("partshash"))
|
|
voteSet := types.NewVoteSet(evidenceChainID, height, 1, tmproto.SignedMsgType(2), conflictingVals)
|
|
|
|
commit, err := types.MakeCommit(blockID, height, 1, voteSet, conflictingPrivVals, defaultEvidenceTime)
|
|
require.NoError(t, err)
|
|
|
|
ev := &types.LightClientAttackEvidence{
|
|
ConflictingBlock: &types.LightBlock{
|
|
SignedHeader: &types.SignedHeader{
|
|
Header: conflictingHeader,
|
|
Commit: commit,
|
|
},
|
|
ValidatorSet: conflictingVals,
|
|
},
|
|
CommonHeight: 10,
|
|
TotalVotingPower: int64(nValidators) * validatorPower,
|
|
ByzantineValidators: conflictingVals.Validators,
|
|
Timestamp: defaultEvidenceTime,
|
|
}
|
|
|
|
trustedBlockID := makeBlockID(trustedHeader.Hash(), 1000, []byte("partshash"))
|
|
trustedVoteSet := types.NewVoteSet(evidenceChainID, height, 1, tmproto.SignedMsgType(2), conflictingVals)
|
|
trustedCommit, err := types.MakeCommit(
|
|
trustedBlockID,
|
|
height,
|
|
1,
|
|
trustedVoteSet,
|
|
conflictingPrivVals,
|
|
defaultEvidenceTime,
|
|
)
|
|
require.NoError(t, err)
|
|
|
|
state := sm.State{
|
|
LastBlockTime: defaultEvidenceTime.Add(1 * time.Minute),
|
|
LastBlockHeight: 11,
|
|
ConsensusParams: *types.DefaultConsensusParams(),
|
|
}
|
|
|
|
stateStore := &smmocks.Store{}
|
|
stateStore.On("LoadValidators", height).Return(conflictingVals, nil)
|
|
stateStore.On("Load").Return(state, nil)
|
|
|
|
blockStore := &mocks.BlockStore{}
|
|
blockStore.On("LoadBlockMeta", height).Return(&types.BlockMeta{Header: *trustedHeader})
|
|
blockStore.On("LoadBlockCommit", height).Return(trustedCommit)
|
|
|
|
pool, err := evidence.NewPool(log.TestingLogger(), dbm.NewMemDB(), stateStore, blockStore)
|
|
require.NoError(t, err)
|
|
|
|
require.NoError(t, pool.AddEvidence(ev))
|
|
require.NoError(t, pool.CheckEvidence(types.EvidenceList{ev}))
|
|
|
|
// Take away the last signature -> there are less validators then what we have detected,
|
|
// hence this should fail.
|
|
commit.Signatures = append(commit.Signatures[:nValidators-1], types.NewCommitSigAbsent())
|
|
require.Error(t, pool.CheckEvidence(types.EvidenceList{ev}))
|
|
}
|
|
|
|
// Tests that restarting the evidence pool after a potential failure will recover the
|
|
// pending evidence and continue to gossip it
|
|
func TestRecoverPendingEvidence(t *testing.T) {
|
|
height := int64(10)
|
|
val := types.NewMockPV()
|
|
valAddress := val.PrivKey.PubKey().Address()
|
|
evidenceDB := dbm.NewMemDB()
|
|
stateStore := initializeValidatorState(t, val, height)
|
|
|
|
state, err := stateStore.Load()
|
|
require.NoError(t, err)
|
|
|
|
blockStore := initializeBlockStore(dbm.NewMemDB(), state, valAddress)
|
|
|
|
// create previous pool and populate it
|
|
pool, err := evidence.NewPool(log.TestingLogger(), evidenceDB, stateStore, blockStore)
|
|
require.NoError(t, err)
|
|
|
|
goodEvidence := types.NewMockDuplicateVoteEvidenceWithValidator(
|
|
height,
|
|
defaultEvidenceTime.Add(10*time.Minute),
|
|
val,
|
|
evidenceChainID,
|
|
)
|
|
expiredEvidence := types.NewMockDuplicateVoteEvidenceWithValidator(
|
|
int64(1),
|
|
defaultEvidenceTime.Add(1*time.Minute),
|
|
val,
|
|
evidenceChainID,
|
|
)
|
|
|
|
require.NoError(t, pool.AddEvidence(goodEvidence))
|
|
require.NoError(t, pool.AddEvidence(expiredEvidence))
|
|
|
|
// now recover from the previous pool at a different time
|
|
newStateStore := &smmocks.Store{}
|
|
newStateStore.On("Load").Return(sm.State{
|
|
LastBlockTime: defaultEvidenceTime.Add(25 * time.Minute),
|
|
LastBlockHeight: height + 15,
|
|
ConsensusParams: types.ConsensusParams{
|
|
Block: types.BlockParams{
|
|
MaxBytes: 22020096,
|
|
MaxGas: -1,
|
|
},
|
|
Evidence: types.EvidenceParams{
|
|
MaxAgeNumBlocks: 20,
|
|
MaxAgeDuration: 20 * time.Minute,
|
|
MaxBytes: 1000,
|
|
},
|
|
},
|
|
}, nil)
|
|
|
|
newPool, err := evidence.NewPool(log.TestingLogger(), evidenceDB, newStateStore, blockStore)
|
|
require.NoError(t, err)
|
|
|
|
evList, _ := newPool.PendingEvidence(defaultEvidenceMaxBytes)
|
|
require.Equal(t, 1, len(evList))
|
|
|
|
next := newPool.EvidenceFront()
|
|
require.Equal(t, goodEvidence, next.Value.(types.Evidence))
|
|
}
|
|
|
|
func initializeStateFromValidatorSet(t *testing.T, valSet *types.ValidatorSet, height int64) sm.Store {
|
|
stateDB := dbm.NewMemDB()
|
|
stateStore := sm.NewStore(stateDB)
|
|
state := sm.State{
|
|
ChainID: evidenceChainID,
|
|
InitialHeight: 1,
|
|
LastBlockHeight: height,
|
|
LastBlockTime: defaultEvidenceTime,
|
|
Validators: valSet,
|
|
NextValidators: valSet.CopyIncrementProposerPriority(1),
|
|
LastValidators: valSet,
|
|
LastHeightValidatorsChanged: 1,
|
|
ConsensusParams: types.ConsensusParams{
|
|
Block: types.BlockParams{
|
|
MaxBytes: 22020096,
|
|
MaxGas: -1,
|
|
},
|
|
Evidence: types.EvidenceParams{
|
|
MaxAgeNumBlocks: 20,
|
|
MaxAgeDuration: 20 * time.Minute,
|
|
MaxBytes: 1000,
|
|
},
|
|
},
|
|
}
|
|
|
|
// save all states up to height
|
|
for i := int64(0); i <= height; i++ {
|
|
state.LastBlockHeight = i
|
|
require.NoError(t, stateStore.Save(state))
|
|
}
|
|
|
|
return stateStore
|
|
}
|
|
|
|
func initializeValidatorState(t *testing.T, privVal types.PrivValidator, height int64) sm.Store {
|
|
pubKey, _ := privVal.GetPubKey(context.Background())
|
|
validator := &types.Validator{Address: pubKey.Address(), VotingPower: 10, PubKey: pubKey}
|
|
|
|
// create validator set and state
|
|
valSet := &types.ValidatorSet{
|
|
Validators: []*types.Validator{validator},
|
|
Proposer: validator,
|
|
}
|
|
|
|
return initializeStateFromValidatorSet(t, valSet, height)
|
|
}
|
|
|
|
// initializeBlockStore creates a block storage and populates it w/ a dummy
|
|
// block at +height+.
|
|
func initializeBlockStore(db dbm.DB, state sm.State, valAddr []byte) *store.BlockStore {
|
|
blockStore := store.NewBlockStore(db)
|
|
|
|
for i := int64(1); i <= state.LastBlockHeight; i++ {
|
|
lastCommit := makeCommit(i-1, valAddr)
|
|
block, _ := state.MakeBlock(i, []types.Tx{}, lastCommit, nil,
|
|
state.Validators.GetProposer().Address)
|
|
block.Header.Time = defaultEvidenceTime.Add(time.Duration(i) * time.Minute)
|
|
block.Header.Version = version.Consensus{Block: version.BlockProtocol, App: 1}
|
|
const parts = 1
|
|
partSet := block.MakePartSet(parts)
|
|
|
|
seenCommit := makeCommit(i, valAddr)
|
|
blockStore.SaveBlock(block, partSet, seenCommit)
|
|
}
|
|
|
|
return blockStore
|
|
}
|
|
|
|
func makeCommit(height int64, valAddr []byte) *types.Commit {
|
|
commitSigs := []types.CommitSig{{
|
|
BlockIDFlag: types.BlockIDFlagCommit,
|
|
ValidatorAddress: valAddr,
|
|
Timestamp: defaultEvidenceTime,
|
|
Signature: []byte("Signature"),
|
|
}}
|
|
|
|
return types.NewCommit(height, 0, types.BlockID{}, commitSigs)
|
|
}
|
|
|
|
func defaultTestPool(t *testing.T, height int64) (*evidence.Pool, types.MockPV) {
|
|
val := types.NewMockPV()
|
|
valAddress := val.PrivKey.PubKey().Address()
|
|
evidenceDB := dbm.NewMemDB()
|
|
stateStore := initializeValidatorState(t, val, height)
|
|
state, _ := stateStore.Load()
|
|
blockStore := initializeBlockStore(dbm.NewMemDB(), state, valAddress)
|
|
|
|
pool, err := evidence.NewPool(log.TestingLogger(), evidenceDB, stateStore, blockStore)
|
|
require.NoError(t, err, "test evidence pool could not be created")
|
|
|
|
return pool, val
|
|
}
|
|
|
|
func createState(height int64, valSet *types.ValidatorSet) sm.State {
|
|
return sm.State{
|
|
ChainID: evidenceChainID,
|
|
LastBlockHeight: height,
|
|
LastBlockTime: defaultEvidenceTime,
|
|
Validators: valSet,
|
|
ConsensusParams: *types.DefaultConsensusParams(),
|
|
}
|
|
}
|