package state_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" abci "github.com/tendermint/tendermint/abci/types" "github.com/tendermint/tendermint/crypto/ed25519" "github.com/tendermint/tendermint/crypto/tmhash" memmock "github.com/tendermint/tendermint/internal/mempool/mock" sm "github.com/tendermint/tendermint/internal/state" "github.com/tendermint/tendermint/internal/state/mocks" statefactory "github.com/tendermint/tendermint/internal/state/test/factory" "github.com/tendermint/tendermint/internal/store" testfactory "github.com/tendermint/tendermint/internal/test/factory" "github.com/tendermint/tendermint/libs/log" tmtime "github.com/tendermint/tendermint/libs/time" tmproto "github.com/tendermint/tendermint/proto/tendermint/types" "github.com/tendermint/tendermint/types" ) const validationTestsStopHeight int64 = 10 func TestValidateBlockHeader(t *testing.T) { ctx, cancel := context.WithCancel(context.Background()) defer cancel() proxyApp := newTestApp() require.NoError(t, proxyApp.Start(ctx)) state, stateDB, privVals := makeState(3, 1) stateStore := sm.NewStore(stateDB) blockStore := store.NewBlockStore(dbm.NewMemDB()) blockExec := sm.NewBlockExecutor( stateStore, log.TestingLogger(), proxyApp.Consensus(), memmock.Mempool{}, sm.EmptyEvidencePool{}, blockStore, ) lastCommit := types.NewCommit(0, 0, types.BlockID{}, nil) // some bad values wrongHash := tmhash.Sum([]byte("this hash is wrong")) wrongVersion1 := state.Version.Consensus wrongVersion1.Block += 2 wrongVersion2 := state.Version.Consensus wrongVersion2.App += 2 // Manipulation of any header field causes failure. testCases := []struct { name string malleateBlock func(block *types.Block) }{ {"Version wrong1", func(block *types.Block) { block.Version = wrongVersion1 }}, {"Version wrong2", func(block *types.Block) { block.Version = wrongVersion2 }}, {"ChainID wrong", func(block *types.Block) { block.ChainID = "not-the-real-one" }}, {"Height wrong", func(block *types.Block) { block.Height += 10 }}, {"Time wrong", func(block *types.Block) { block.Time = block.Time.Add(-time.Second * 1) }}, {"Time wrong 2", func(block *types.Block) { block.Time = block.Time.Add(time.Second * 1) }}, {"LastBlockID wrong", func(block *types.Block) { block.LastBlockID.PartSetHeader.Total += 10 }}, {"LastCommitHash wrong", func(block *types.Block) { block.LastCommitHash = wrongHash }}, {"DataHash wrong", func(block *types.Block) { block.DataHash = wrongHash }}, {"ValidatorsHash wrong", func(block *types.Block) { block.ValidatorsHash = wrongHash }}, {"NextValidatorsHash wrong", func(block *types.Block) { block.NextValidatorsHash = wrongHash }}, {"ConsensusHash wrong", func(block *types.Block) { block.ConsensusHash = wrongHash }}, {"AppHash wrong", func(block *types.Block) { block.AppHash = wrongHash }}, {"LastResultsHash wrong", func(block *types.Block) { block.LastResultsHash = wrongHash }}, {"EvidenceHash wrong", func(block *types.Block) { block.EvidenceHash = wrongHash }}, {"Proposer wrong", func(block *types.Block) { block.ProposerAddress = ed25519.GenPrivKey().PubKey().Address() }}, {"Proposer invalid", func(block *types.Block) { block.ProposerAddress = []byte("wrong size") }}, {"first LastCommit contains signatures", func(block *types.Block) { block.LastCommit = types.NewCommit(0, 0, types.BlockID{}, []types.CommitSig{types.NewCommitSigAbsent()}) block.LastCommitHash = block.LastCommit.Hash() }}, } // Build up state for multiple heights for height := int64(1); height < validationTestsStopHeight; height++ { /* Invalid blocks don't pass */ for _, tc := range testCases { block, err := statefactory.MakeBlock(state, height, lastCommit) require.NoError(t, err) tc.malleateBlock(block) err = blockExec.ValidateBlock(state, block) t.Logf("%s: %v", tc.name, err) require.Error(t, err, tc.name) } /* A good block passes */ var err error state, _, lastCommit, err = makeAndCommitGoodBlock(ctx, state, height, lastCommit, state.Validators.GetProposer().Address, blockExec, privVals, nil) require.NoError(t, err, "height %d", height) } nextHeight := validationTestsStopHeight block, err := statefactory.MakeBlock(state, nextHeight, lastCommit) require.NoError(t, err) state.InitialHeight = nextHeight + 1 err = blockExec.ValidateBlock(state, block) require.Error(t, err, "expected an error when state is ahead of block") assert.Contains(t, err.Error(), "lower than initial height") } func TestValidateBlockCommit(t *testing.T) { ctx, cancel := context.WithCancel(context.Background()) defer cancel() proxyApp := newTestApp() require.NoError(t, proxyApp.Start(ctx)) state, stateDB, privVals := makeState(1, 1) stateStore := sm.NewStore(stateDB) blockStore := store.NewBlockStore(dbm.NewMemDB()) blockExec := sm.NewBlockExecutor( stateStore, log.TestingLogger(), proxyApp.Consensus(), memmock.Mempool{}, sm.EmptyEvidencePool{}, blockStore, ) lastCommit := types.NewCommit(0, 0, types.BlockID{}, nil) wrongSigsCommit := types.NewCommit(1, 0, types.BlockID{}, nil) badPrivVal := types.NewMockPV() for height := int64(1); height < validationTestsStopHeight; height++ { proposerAddr := state.Validators.GetProposer().Address if height > 1 { /* #2589: ensure state.LastValidators.VerifyCommit fails here */ // should be height-1 instead of height wrongHeightVote, err := testfactory.MakeVote( ctx, privVals[proposerAddr.String()], chainID, 1, height, 0, 2, state.LastBlockID, time.Now(), ) require.NoError(t, err, "height %d", height) wrongHeightCommit := types.NewCommit( wrongHeightVote.Height, wrongHeightVote.Round, state.LastBlockID, []types.CommitSig{wrongHeightVote.CommitSig()}, ) block, err := statefactory.MakeBlock(state, height, wrongHeightCommit) require.NoError(t, err) err = blockExec.ValidateBlock(state, block) _, isErrInvalidCommitHeight := err.(types.ErrInvalidCommitHeight) require.True(t, isErrInvalidCommitHeight, "expected ErrInvalidCommitHeight at height %d but got: %v", height, err) /* #2589: test len(block.LastCommit.Signatures) == state.LastValidators.Size() */ block, err = statefactory.MakeBlock(state, height, wrongSigsCommit) require.NoError(t, err) err = blockExec.ValidateBlock(state, block) _, isErrInvalidCommitSignatures := err.(types.ErrInvalidCommitSignatures) require.True(t, isErrInvalidCommitSignatures, "expected ErrInvalidCommitSignatures at height %d, but got: %v", height, err, ) } /* A good block passes */ var err error var blockID types.BlockID state, blockID, lastCommit, err = makeAndCommitGoodBlock( ctx, state, height, lastCommit, proposerAddr, blockExec, privVals, nil, ) require.NoError(t, err, "height %d", height) /* wrongSigsCommit is fine except for the extra bad precommit */ goodVote, err := testfactory.MakeVote( ctx, privVals[proposerAddr.String()], chainID, 1, height, 0, 2, blockID, time.Now(), ) require.NoError(t, err, "height %d", height) bpvPubKey, err := badPrivVal.GetPubKey(ctx) require.NoError(t, err) badVote := &types.Vote{ ValidatorAddress: bpvPubKey.Address(), ValidatorIndex: 0, Height: height, Round: 0, Timestamp: tmtime.Now(), Type: tmproto.PrecommitType, BlockID: blockID, } g := goodVote.ToProto() b := badVote.ToProto() err = badPrivVal.SignVote(ctx, chainID, g) require.NoError(t, err, "height %d", height) err = badPrivVal.SignVote(ctx, chainID, b) require.NoError(t, err, "height %d", height) goodVote.Signature, badVote.Signature = g.Signature, b.Signature wrongSigsCommit = types.NewCommit(goodVote.Height, goodVote.Round, blockID, []types.CommitSig{goodVote.CommitSig(), badVote.CommitSig()}) } } func TestValidateBlockEvidence(t *testing.T) { ctx, cancel := context.WithCancel(context.Background()) defer cancel() proxyApp := newTestApp() require.NoError(t, proxyApp.Start(ctx)) state, stateDB, privVals := makeState(4, 1) stateStore := sm.NewStore(stateDB) blockStore := store.NewBlockStore(dbm.NewMemDB()) defaultEvidenceTime := time.Date(2019, 1, 1, 0, 0, 0, 0, time.UTC) evpool := &mocks.EvidencePool{} evpool.On("CheckEvidence", mock.AnythingOfType("types.EvidenceList")).Return(nil) evpool.On("Update", mock.AnythingOfType("state.State"), mock.AnythingOfType("types.EvidenceList")).Return() evpool.On("ABCIEvidence", mock.AnythingOfType("int64"), mock.AnythingOfType("[]types.Evidence")).Return( []abci.Evidence{}) state.ConsensusParams.Evidence.MaxBytes = 1000 blockExec := sm.NewBlockExecutor( stateStore, log.TestingLogger(), proxyApp.Consensus(), memmock.Mempool{}, evpool, blockStore, ) lastCommit := types.NewCommit(0, 0, types.BlockID{}, nil) for height := int64(1); height < validationTestsStopHeight; height++ { proposerAddr := state.Validators.GetProposer().Address maxBytesEvidence := state.ConsensusParams.Evidence.MaxBytes if height > 1 { /* A block with too much evidence fails */ evidence := make([]types.Evidence, 0) var currentBytes int64 // more bytes than the maximum allowed for evidence for currentBytes <= maxBytesEvidence { newEv, err := types.NewMockDuplicateVoteEvidenceWithValidator(ctx, height, time.Now(), privVals[proposerAddr.String()], chainID) require.NoError(t, err) evidence = append(evidence, newEv) currentBytes += int64(len(newEv.Bytes())) } block, _, err := state.MakeBlock(height, testfactory.MakeTenTxs(height), lastCommit, evidence, proposerAddr) require.NoError(t, err) err = blockExec.ValidateBlock(state, block) if assert.Error(t, err) { _, ok := err.(*types.ErrEvidenceOverflow) require.True(t, ok, "expected error to be of type ErrEvidenceOverflow at height %d but got %v", height, err) } } /* A good block with several pieces of good evidence passes */ evidence := make([]types.Evidence, 0) var currentBytes int64 // precisely the amount of allowed evidence for { newEv, err := types.NewMockDuplicateVoteEvidenceWithValidator(ctx, height, defaultEvidenceTime, privVals[proposerAddr.String()], chainID) require.NoError(t, err) currentBytes += int64(len(newEv.Bytes())) if currentBytes >= maxBytesEvidence { break } evidence = append(evidence, newEv) } var err error state, _, lastCommit, err = makeAndCommitGoodBlock( ctx, state, height, lastCommit, proposerAddr, blockExec, privVals, evidence, ) require.NoError(t, err, "height %d", height) } }