package client_test
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import (
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"bytes"
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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/require"
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abci "github.com/tendermint/tendermint/abci/types"
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"github.com/tendermint/tendermint/crypto"
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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/privval"
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"github.com/tendermint/tendermint/rpc/client"
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rpctest "github.com/tendermint/tendermint/rpc/test"
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"github.com/tendermint/tendermint/types"
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)
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func newEvidence(t *testing.T, val *privval.FilePV,
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vote *types.Vote, vote2 *types.Vote,
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chainID string) *types.DuplicateVoteEvidence {
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var err error
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vote.Signature, err = val.Key.PrivKey.Sign(vote.SignBytes(chainID))
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require.NoError(t, err)
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vote2.Signature, err = val.Key.PrivKey.Sign(vote2.SignBytes(chainID))
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require.NoError(t, err)
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return types.NewDuplicateVoteEvidence(vote, vote2)
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}
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func makeEvidences(
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t *testing.T,
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val *privval.FilePV,
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chainID string,
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) (correct *types.DuplicateVoteEvidence, fakes []*types.DuplicateVoteEvidence) {
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vote := types.Vote{
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ValidatorAddress: val.Key.Address,
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ValidatorIndex: 0,
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Height: 1,
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Round: 0,
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Type: types.PrevoteType,
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Timestamp: time.Now().UTC(),
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BlockID: types.BlockID{
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Hash: tmhash.Sum([]byte("blockhash")),
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PartsHeader: types.PartSetHeader{
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Total: 1000,
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Hash: tmhash.Sum([]byte("partset")),
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},
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},
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}
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vote2 := vote
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vote2.BlockID.Hash = tmhash.Sum([]byte("blockhash2"))
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correct = newEvidence(t, val, &vote, &vote2, chainID)
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fakes = make([]*types.DuplicateVoteEvidence, 0)
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// different address
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{
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v := vote2
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v.ValidatorAddress = []byte("some_address")
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fakes = append(fakes, newEvidence(t, val, &vote, &v, chainID))
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}
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// different index
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{
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v := vote2
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v.ValidatorIndex = vote.ValidatorIndex + 1
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fakes = append(fakes, newEvidence(t, val, &vote, &v, chainID))
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}
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// different height
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{
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v := vote2
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v.Height = vote.Height + 1
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fakes = append(fakes, newEvidence(t, val, &vote, &v, chainID))
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}
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// different round
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{
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v := vote2
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v.Round = vote.Round + 1
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fakes = append(fakes, newEvidence(t, val, &vote, &v, chainID))
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}
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// different type
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{
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v := vote2
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v.Type = types.PrecommitType
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fakes = append(fakes, newEvidence(t, val, &vote, &v, chainID))
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}
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// exactly same vote
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{
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v := vote
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fakes = append(fakes, newEvidence(t, val, &vote, &v, chainID))
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}
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return correct, fakes
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}
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func TestBroadcastEvidence_DuplicateVoteEvidence(t *testing.T) {
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var (
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config = rpctest.GetConfig()
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chainID = config.ChainID()
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pv = privval.LoadOrGenFilePV(config.PrivValidatorKeyFile(), config.PrivValidatorStateFile())
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)
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correct, fakes := makeEvidences(t, pv, chainID)
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for i, c := range GetClients() {
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t.Logf("client %d", i)
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result, err := c.BroadcastEvidence(correct)
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require.NoError(t, err, "BroadcastEvidence(%s) failed", correct)
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assert.Equal(t, correct.Hash(), result.Hash, "expected result hash to match evidence hash")
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status, err := c.Status()
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require.NoError(t, err)
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client.WaitForHeight(c, status.SyncInfo.LatestBlockHeight+2, nil)
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ed25519pub := pv.Key.PubKey.(ed25519.PubKeyEd25519)
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rawpub := ed25519pub[:]
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result2, err := c.ABCIQuery("/val", rawpub)
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require.NoError(t, err)
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qres := result2.Response
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require.True(t, qres.IsOK())
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var v abci.ValidatorUpdate
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err = abci.ReadMessage(bytes.NewReader(qres.Value), &v)
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require.NoError(t, err, "Error reading query result, value %v", qres.Value)
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require.EqualValues(t, rawpub, v.PubKey.Data, "Stored PubKey not equal with expected, value %v", string(qres.Value))
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require.Equal(t, int64(9), v.Power, "Stored Power not equal with expected, value %v", string(qres.Value))
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for _, fake := range fakes {
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_, err := c.BroadcastEvidence(fake)
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require.Error(t, err, "BroadcastEvidence(%s) succeeded, but the evidence was fake", fake)
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}
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}
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}
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func TestBroadcastEvidence_ConflictingHeadersEvidence(t *testing.T) {
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var (
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config = rpctest.GetConfig()
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chainID = config.ChainID()
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pv = privval.LoadOrGenFilePV(config.PrivValidatorKeyFile(), config.PrivValidatorStateFile())
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)
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for i, c := range GetClients() {
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t.Logf("client %d", i)
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h1, err := c.Commit(nil)
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require.NoError(t, err)
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require.NotNil(t, h1.SignedHeader.Header)
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// Create an alternative header with a different AppHash.
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h2 := &types.SignedHeader{
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Header: &types.Header{
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Version: h1.Version,
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ChainID: h1.ChainID,
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Height: h1.Height,
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Time: h1.Time,
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LastBlockID: h1.LastBlockID,
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LastCommitHash: h1.LastCommitHash,
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DataHash: h1.DataHash,
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ValidatorsHash: h1.ValidatorsHash,
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NextValidatorsHash: h1.NextValidatorsHash,
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ConsensusHash: h1.ConsensusHash,
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AppHash: crypto.CRandBytes(32),
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LastResultsHash: h1.LastResultsHash,
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EvidenceHash: h1.EvidenceHash,
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ProposerAddress: h1.ProposerAddress,
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},
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Commit: types.NewCommit(h1.Height, 1, h1.Commit.BlockID, h1.Commit.Signatures),
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}
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h2.Commit.BlockID = types.BlockID{
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Hash: h2.Hash(),
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PartsHeader: types.PartSetHeader{Total: 1, Hash: crypto.CRandBytes(32)},
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}
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vote := &types.Vote{
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ValidatorAddress: pv.Key.Address,
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ValidatorIndex: 0,
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Height: h2.Height,
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Round: h2.Commit.Round,
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Timestamp: h2.Time,
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Type: types.PrecommitType,
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BlockID: h2.Commit.BlockID,
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}
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signBytes, err := pv.Key.PrivKey.Sign(vote.SignBytes(chainID))
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require.NoError(t, err)
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h2.Commit.Signatures[0] = types.NewCommitSigForBlock(signBytes, pv.Key.Address, h2.Time)
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t.Logf("h1 AppHash: %X", h1.AppHash)
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t.Logf("h2 AppHash: %X", h2.AppHash)
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ev := types.ConflictingHeadersEvidence{
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H1: &h1.SignedHeader,
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H2: h2,
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}
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result, err := c.BroadcastEvidence(ev)
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require.NoError(t, err, "BroadcastEvidence(%s) failed", ev)
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assert.Equal(t, ev.Hash(), result.Hash, "expected result hash to match evidence hash")
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}
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}
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