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135 lines
3.5 KiB
135 lines
3.5 KiB
package consensus
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import (
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"context"
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"sync"
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"testing"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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"github.com/tendermint/tendermint/internal/eventbus"
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"github.com/tendermint/tendermint/internal/p2p"
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"github.com/tendermint/tendermint/libs/bytes"
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tmrand "github.com/tendermint/tendermint/libs/rand"
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tmcons "github.com/tendermint/tendermint/proto/tendermint/consensus"
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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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func TestReactorInvalidPrecommit(t *testing.T) {
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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config := configSetup(t)
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n := 4
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states, cleanup := randConsensusState(ctx, t,
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config, n, "consensus_reactor_test",
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newMockTickerFunc(true), newKVStore)
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t.Cleanup(cleanup)
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for i := 0; i < 4; i++ {
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ticker := NewTimeoutTicker(states[i].logger)
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states[i].SetTimeoutTicker(ticker)
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}
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rts := setup(ctx, t, n, states, 100) // buffer must be large enough to not deadlock
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for _, reactor := range rts.reactors {
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state := reactor.state.GetState()
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reactor.SwitchToConsensus(ctx, state, false)
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}
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// this val sends a random precommit at each height
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node := rts.network.RandomNode()
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byzState := rts.states[node.NodeID]
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byzReactor := rts.reactors[node.NodeID]
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// Update the doPrevote function to just send a valid precommit for a random
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// block and otherwise disable the priv validator.
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byzState.mtx.Lock()
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privVal := byzState.privValidator
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byzState.doPrevote = func(ctx context.Context, height int64, round int32) {
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invalidDoPrevoteFunc(ctx, t, height, round, byzState, byzReactor, privVal)
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}
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byzState.mtx.Unlock()
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// wait for a bunch of blocks
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//
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// TODO: Make this tighter by ensuring the halt happens by block 2.
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var wg sync.WaitGroup
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for i := 0; i < 10; i++ {
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for _, sub := range rts.subs {
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wg.Add(1)
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go func(s eventbus.Subscription) {
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defer wg.Done()
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_, err := s.Next(ctx)
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if !assert.NoError(t, err) {
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cancel() // cancel other subscribers on failure
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}
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}(sub)
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}
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}
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wg.Wait()
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}
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func invalidDoPrevoteFunc(
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ctx context.Context,
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t *testing.T,
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height int64,
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round int32,
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cs *State,
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r *Reactor,
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pv types.PrivValidator,
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) {
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// routine to:
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// - precommit for a random block
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// - send precommit to all peers
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// - disable privValidator (so we don't do normal precommits)
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go func() {
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cs.mtx.Lock()
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cs.privValidator = pv
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pubKey, err := cs.privValidator.GetPubKey(ctx)
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require.NoError(t, err)
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addr := pubKey.Address()
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valIndex, _ := cs.Validators.GetByAddress(addr)
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// precommit a random block
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blockHash := bytes.HexBytes(tmrand.Bytes(32))
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precommit := &types.Vote{
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ValidatorAddress: addr,
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ValidatorIndex: valIndex,
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Height: cs.Height,
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Round: cs.Round,
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Timestamp: cs.voteTime(),
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Type: tmproto.PrecommitType,
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BlockID: types.BlockID{
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Hash: blockHash,
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PartSetHeader: types.PartSetHeader{Total: 1, Hash: tmrand.Bytes(32)}},
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}
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p := precommit.ToProto()
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err = cs.privValidator.SignVote(ctx, cs.state.ChainID, p)
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require.NoError(t, err)
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precommit.Signature = p.Signature
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cs.privValidator = nil // disable priv val so we don't do normal votes
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cs.mtx.Unlock()
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for _, ps := range r.peers {
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cs.logger.Info("sending bad vote", "block", blockHash, "peer", ps.peerID)
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require.NoError(t, r.voteCh.Send(ctx, p2p.Envelope{
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To: ps.peerID,
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Message: &tmcons.Vote{
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Vote: precommit.ToProto(),
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},
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}))
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}
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}()
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}
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