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