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1046 lines
26 KiB
1046 lines
26 KiB
package light_test
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import (
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"sync"
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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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dbm "github.com/tendermint/tm-db"
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"github.com/tendermint/tendermint/libs/log"
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"github.com/tendermint/tendermint/light"
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"github.com/tendermint/tendermint/light/provider"
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mockp "github.com/tendermint/tendermint/light/provider/mock"
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dbs "github.com/tendermint/tendermint/light/store/db"
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"github.com/tendermint/tendermint/types"
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)
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const (
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chainID = "test"
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)
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var (
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keys = genPrivKeys(4)
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vals = keys.ToValidators(20, 10)
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bTime, _ = time.Parse(time.RFC3339, "2006-01-02T15:04:05Z")
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h1 = keys.GenSignedHeader(chainID, 1, bTime, nil, vals, vals,
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hash("app_hash"), hash("cons_hash"), hash("results_hash"), 0, len(keys))
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// 3/3 signed
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h2 = keys.GenSignedHeaderLastBlockID(chainID, 2, bTime.Add(30*time.Minute), nil, vals, vals,
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hash("app_hash"), hash("cons_hash"), hash("results_hash"), 0, len(keys), types.BlockID{Hash: h1.Hash()})
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// 3/3 signed
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h3 = keys.GenSignedHeaderLastBlockID(chainID, 3, bTime.Add(1*time.Hour), nil, vals, vals,
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hash("app_hash"), hash("cons_hash"), hash("results_hash"), 0, len(keys), types.BlockID{Hash: h2.Hash()})
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trustPeriod = 4 * time.Hour
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trustOptions = light.TrustOptions{
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Period: 4 * time.Hour,
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Height: 1,
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Hash: h1.Hash(),
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}
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valSet = map[int64]*types.ValidatorSet{
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1: vals,
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2: vals,
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3: vals,
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4: vals,
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}
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headerSet = map[int64]*types.SignedHeader{
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1: h1,
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// interim header (3/3 signed)
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2: h2,
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// last header (3/3 signed)
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3: h3,
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}
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fullNode = mockp.New(
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chainID,
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headerSet,
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valSet,
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)
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deadNode = mockp.NewDeadMock(chainID)
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largeFullNode = mockp.New(GenMockNode(chainID, 10, 3, 0, bTime))
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)
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func TestClient_SequentialVerification(t *testing.T) {
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newKeys := genPrivKeys(4)
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newVals := newKeys.ToValidators(10, 1)
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testCases := []struct {
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name string
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otherHeaders map[int64]*types.SignedHeader // all except ^
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vals map[int64]*types.ValidatorSet
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initErr bool
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verifyErr bool
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}{
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{
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"good",
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headerSet,
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valSet,
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false,
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false,
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},
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{
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"bad: different first header",
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map[int64]*types.SignedHeader{
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// different header
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1: keys.GenSignedHeader(chainID, 1, bTime.Add(1*time.Hour), nil, vals, vals,
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hash("app_hash"), hash("cons_hash"), hash("results_hash"), 0, len(keys)),
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},
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map[int64]*types.ValidatorSet{
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1: vals,
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},
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true,
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false,
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},
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{
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"bad: 1/3 signed interim header",
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map[int64]*types.SignedHeader{
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// trusted header
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1: h1,
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// interim header (1/3 signed)
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2: keys.GenSignedHeader(chainID, 2, bTime.Add(1*time.Hour), nil, vals, vals,
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hash("app_hash"), hash("cons_hash"), hash("results_hash"), len(keys)-1, len(keys)),
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// last header (3/3 signed)
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3: keys.GenSignedHeader(chainID, 3, bTime.Add(2*time.Hour), nil, vals, vals,
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hash("app_hash"), hash("cons_hash"), hash("results_hash"), 0, len(keys)),
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},
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valSet,
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false,
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true,
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},
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{
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"bad: 1/3 signed last header",
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map[int64]*types.SignedHeader{
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// trusted header
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1: h1,
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// interim header (3/3 signed)
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2: keys.GenSignedHeader(chainID, 2, bTime.Add(1*time.Hour), nil, vals, vals,
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hash("app_hash"), hash("cons_hash"), hash("results_hash"), 0, len(keys)),
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// last header (1/3 signed)
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3: keys.GenSignedHeader(chainID, 3, bTime.Add(2*time.Hour), nil, vals, vals,
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hash("app_hash"), hash("cons_hash"), hash("results_hash"), len(keys)-1, len(keys)),
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},
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valSet,
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false,
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true,
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},
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{
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"bad: different validator set at height 3",
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headerSet,
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map[int64]*types.ValidatorSet{
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1: vals,
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2: vals,
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3: newVals,
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},
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false,
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true,
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},
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}
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for _, tc := range testCases {
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tc := tc
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t.Run(tc.name, func(t *testing.T) {
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c, err := light.NewClient(
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chainID,
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trustOptions,
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mockp.New(
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chainID,
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tc.otherHeaders,
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tc.vals,
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),
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[]provider.Provider{mockp.New(
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chainID,
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tc.otherHeaders,
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tc.vals,
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)},
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dbs.New(dbm.NewMemDB(), chainID),
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light.SequentialVerification(),
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)
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if tc.initErr {
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require.Error(t, err)
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return
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}
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require.NoError(t, err)
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_, err = c.VerifyHeaderAtHeight(3, bTime.Add(3*time.Hour))
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if tc.verifyErr {
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assert.Error(t, err)
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} else {
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assert.NoError(t, err)
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}
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})
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}
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}
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func TestClient_SkippingVerification(t *testing.T) {
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// required for 2nd test case
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newKeys := genPrivKeys(4)
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newVals := newKeys.ToValidators(10, 1)
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// 1/3+ of vals, 2/3- of newVals
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transitKeys := keys.Extend(3)
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transitVals := transitKeys.ToValidators(10, 1)
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testCases := []struct {
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name string
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otherHeaders map[int64]*types.SignedHeader // all except ^
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vals map[int64]*types.ValidatorSet
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initErr bool
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verifyErr bool
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}{
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{
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"good",
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map[int64]*types.SignedHeader{
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// trusted header
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1: h1,
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// last header (3/3 signed)
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3: h3,
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},
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valSet,
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false,
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false,
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},
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{
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"good, but val set changes by 2/3 (1/3 of vals is still present)",
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map[int64]*types.SignedHeader{
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// trusted header
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1: h1,
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3: transitKeys.GenSignedHeader(chainID, 3, bTime.Add(2*time.Hour), nil, transitVals, transitVals,
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hash("app_hash"), hash("cons_hash"), hash("results_hash"), 0, len(transitKeys)),
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},
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map[int64]*types.ValidatorSet{
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1: vals,
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2: vals,
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3: transitVals,
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},
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false,
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false,
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},
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{
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"good, but val set changes 100% at height 2",
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map[int64]*types.SignedHeader{
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// trusted header
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1: h1,
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// interim header (3/3 signed)
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2: keys.GenSignedHeader(chainID, 2, bTime.Add(1*time.Hour), nil, vals, newVals,
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hash("app_hash"), hash("cons_hash"), hash("results_hash"), 0, len(keys)),
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// last header (0/4 of the original val set signed)
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3: newKeys.GenSignedHeader(chainID, 3, bTime.Add(2*time.Hour), nil, newVals, newVals,
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hash("app_hash"), hash("cons_hash"), hash("results_hash"), 0, len(newKeys)),
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},
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map[int64]*types.ValidatorSet{
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1: vals,
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2: vals,
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3: newVals,
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},
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false,
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false,
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},
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{
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"bad: last header signed by newVals, interim header has no signers",
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map[int64]*types.SignedHeader{
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// trusted header
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1: h1,
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// last header (0/4 of the original val set signed)
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2: keys.GenSignedHeader(chainID, 2, bTime.Add(1*time.Hour), nil, vals, newVals,
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hash("app_hash"), hash("cons_hash"), hash("results_hash"), 0, 0),
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// last header (0/4 of the original val set signed)
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3: newKeys.GenSignedHeader(chainID, 3, bTime.Add(2*time.Hour), nil, newVals, newVals,
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hash("app_hash"), hash("cons_hash"), hash("results_hash"), 0, len(newKeys)),
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},
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map[int64]*types.ValidatorSet{
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1: vals,
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2: vals,
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3: newVals,
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},
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false,
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true,
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},
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}
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for _, tc := range testCases {
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tc := tc
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t.Run(tc.name, func(t *testing.T) {
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c, err := light.NewClient(
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chainID,
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trustOptions,
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mockp.New(
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chainID,
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tc.otherHeaders,
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tc.vals,
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),
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[]provider.Provider{mockp.New(
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chainID,
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tc.otherHeaders,
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tc.vals,
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)},
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dbs.New(dbm.NewMemDB(), chainID),
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light.SkippingVerification(light.DefaultTrustLevel),
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)
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if tc.initErr {
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require.Error(t, err)
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return
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}
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require.NoError(t, err)
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_, err = c.VerifyHeaderAtHeight(3, bTime.Add(3*time.Hour))
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if tc.verifyErr {
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assert.Error(t, err)
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} else {
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assert.NoError(t, err)
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}
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})
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}
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// start from a large header to make sure that the pivot height doesn't select a height outside
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// the appropriate range
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veryLargeFullNode := mockp.New(GenMockNode(chainID, 100, 3, 1, bTime))
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h1, err := veryLargeFullNode.SignedHeader(90)
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require.NoError(t, err)
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c, err := light.NewClient(
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chainID,
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light.TrustOptions{
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Period: 4 * time.Hour,
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Height: 90,
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Hash: h1.Hash(),
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},
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veryLargeFullNode,
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[]provider.Provider{veryLargeFullNode},
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dbs.New(dbm.NewMemDB(), chainID),
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light.SkippingVerification(light.DefaultTrustLevel),
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)
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require.NoError(t, err)
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h, err := c.Update(bTime.Add(100 * time.Minute))
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assert.NoError(t, err)
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h2, err := veryLargeFullNode.SignedHeader(100)
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require.NoError(t, err)
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assert.Equal(t, h, h2)
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}
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func TestClient_Cleanup(t *testing.T) {
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c, err := light.NewClient(
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chainID,
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trustOptions,
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fullNode,
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[]provider.Provider{fullNode},
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dbs.New(dbm.NewMemDB(), chainID),
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light.Logger(log.TestingLogger()),
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)
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require.NoError(t, err)
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_, err = c.TrustedHeader(1)
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require.NoError(t, err)
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err = c.Cleanup()
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require.NoError(t, err)
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// Check no headers/valsets exist after Cleanup.
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h, err := c.TrustedHeader(1)
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assert.Error(t, err)
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assert.Nil(t, h)
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valSet, _, err := c.TrustedValidatorSet(1)
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assert.Error(t, err)
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assert.Nil(t, valSet)
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}
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// trustedHeader.Height == options.Height
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func TestClientRestoresTrustedHeaderAfterStartup1(t *testing.T) {
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// 1. options.Hash == trustedHeader.Hash
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{
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trustedStore := dbs.New(dbm.NewMemDB(), chainID)
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err := trustedStore.SaveSignedHeaderAndValidatorSet(h1, vals)
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require.NoError(t, err)
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c, err := light.NewClient(
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chainID,
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trustOptions,
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fullNode,
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[]provider.Provider{fullNode},
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trustedStore,
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light.Logger(log.TestingLogger()),
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)
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require.NoError(t, err)
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h, err := c.TrustedHeader(1)
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assert.NoError(t, err)
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assert.NotNil(t, h)
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assert.Equal(t, h.Hash(), h1.Hash())
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valSet, _, err := c.TrustedValidatorSet(1)
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assert.NoError(t, err)
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assert.NotNil(t, valSet)
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if assert.NotNil(t, valSet) {
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assert.Equal(t, h.ValidatorsHash.Bytes(), valSet.Hash())
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}
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}
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// 2. options.Hash != trustedHeader.Hash
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{
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trustedStore := dbs.New(dbm.NewMemDB(), chainID)
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err := trustedStore.SaveSignedHeaderAndValidatorSet(h1, vals)
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require.NoError(t, err)
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// header1 != header
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header1 := keys.GenSignedHeader(chainID, 1, bTime.Add(1*time.Hour), nil, vals, vals,
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hash("app_hash"), hash("cons_hash"), hash("results_hash"), 0, len(keys))
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primary := mockp.New(
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chainID,
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map[int64]*types.SignedHeader{
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// trusted header
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1: header1,
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},
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valSet,
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)
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c, err := light.NewClient(
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chainID,
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light.TrustOptions{
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Period: 4 * time.Hour,
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Height: 1,
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Hash: header1.Hash(),
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},
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primary,
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[]provider.Provider{primary},
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trustedStore,
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light.Logger(log.TestingLogger()),
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)
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require.NoError(t, err)
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h, err := c.TrustedHeader(1)
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assert.NoError(t, err)
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if assert.NotNil(t, h) {
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assert.Equal(t, h.Hash(), header1.Hash())
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}
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valSet, _, err := c.TrustedValidatorSet(1)
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assert.NoError(t, err)
|
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assert.NotNil(t, valSet)
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if assert.NotNil(t, valSet) {
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assert.Equal(t, h.ValidatorsHash.Bytes(), valSet.Hash())
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}
|
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}
|
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}
|
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|
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// trustedHeader.Height < options.Height
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func TestClientRestoresTrustedHeaderAfterStartup2(t *testing.T) {
|
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// 1. options.Hash == trustedHeader.Hash
|
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{
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trustedStore := dbs.New(dbm.NewMemDB(), chainID)
|
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err := trustedStore.SaveSignedHeaderAndValidatorSet(h1, vals)
|
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require.NoError(t, err)
|
|
|
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c, err := light.NewClient(
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chainID,
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light.TrustOptions{
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Period: 4 * time.Hour,
|
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Height: 2,
|
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Hash: h2.Hash(),
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},
|
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fullNode,
|
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[]provider.Provider{fullNode},
|
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trustedStore,
|
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light.Logger(log.TestingLogger()),
|
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)
|
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require.NoError(t, err)
|
|
|
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// Check we still have the 1st header (+header+).
|
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h, err := c.TrustedHeader(1)
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assert.NoError(t, err)
|
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assert.NotNil(t, h)
|
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assert.Equal(t, h.Hash(), h1.Hash())
|
|
|
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valSet, _, err := c.TrustedValidatorSet(1)
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assert.NoError(t, err)
|
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assert.NotNil(t, valSet)
|
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if assert.NotNil(t, valSet) {
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assert.Equal(t, h.ValidatorsHash.Bytes(), valSet.Hash())
|
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}
|
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}
|
|
|
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// 2. options.Hash != trustedHeader.Hash
|
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// This could happen if previous provider was lying to us.
|
|
{
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trustedStore := dbs.New(dbm.NewMemDB(), chainID)
|
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err := trustedStore.SaveSignedHeaderAndValidatorSet(h1, vals)
|
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require.NoError(t, err)
|
|
|
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// header1 != header
|
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diffHeader1 := keys.GenSignedHeader(chainID, 1, bTime.Add(1*time.Hour), nil, vals, vals,
|
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hash("app_hash"), hash("cons_hash"), hash("results_hash"), 0, len(keys))
|
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|
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diffHeader2 := keys.GenSignedHeader(chainID, 2, bTime.Add(2*time.Hour), nil, vals, vals,
|
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hash("app_hash"), hash("cons_hash"), hash("results_hash"), 0, len(keys))
|
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|
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primary := mockp.New(
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chainID,
|
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map[int64]*types.SignedHeader{
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1: diffHeader1,
|
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2: diffHeader2,
|
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},
|
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valSet,
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)
|
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|
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c, err := light.NewClient(
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chainID,
|
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light.TrustOptions{
|
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Period: 4 * time.Hour,
|
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Height: 2,
|
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Hash: diffHeader2.Hash(),
|
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},
|
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primary,
|
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[]provider.Provider{primary},
|
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trustedStore,
|
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light.Logger(log.TestingLogger()),
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)
|
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require.NoError(t, err)
|
|
|
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// Check we no longer have the invalid 1st header (+header+).
|
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h, err := c.TrustedHeader(1)
|
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assert.Error(t, err)
|
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assert.Nil(t, h)
|
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|
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valSet, _, err := c.TrustedValidatorSet(1)
|
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assert.Error(t, err)
|
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assert.Nil(t, valSet)
|
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}
|
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}
|
|
|
|
// trustedHeader.Height > options.Height
|
|
func TestClientRestoresTrustedHeaderAfterStartup3(t *testing.T) {
|
|
// 1. options.Hash == trustedHeader.Hash
|
|
{
|
|
trustedStore := dbs.New(dbm.NewMemDB(), chainID)
|
|
err := trustedStore.SaveSignedHeaderAndValidatorSet(h1, vals)
|
|
require.NoError(t, err)
|
|
|
|
//header2 := keys.GenSignedHeader(chainID, 2, bTime.Add(2*time.Hour), nil, vals, vals,
|
|
// []byte("app_hash"), []byte("cons_hash"), []byte("results_hash"), 0, len(keys))
|
|
err = trustedStore.SaveSignedHeaderAndValidatorSet(h2, vals)
|
|
require.NoError(t, err)
|
|
|
|
c, err := light.NewClient(
|
|
chainID,
|
|
trustOptions,
|
|
fullNode,
|
|
[]provider.Provider{fullNode},
|
|
trustedStore,
|
|
light.Logger(log.TestingLogger()),
|
|
)
|
|
require.NoError(t, err)
|
|
|
|
// Check we still have the 1st header (+header+).
|
|
h, err := c.TrustedHeader(1)
|
|
assert.NoError(t, err)
|
|
assert.NotNil(t, h)
|
|
assert.Equal(t, h.Hash(), h1.Hash())
|
|
|
|
valSet, _, err := c.TrustedValidatorSet(1)
|
|
assert.NoError(t, err)
|
|
assert.NotNil(t, valSet)
|
|
if assert.NotNil(t, valSet) {
|
|
assert.Equal(t, h.ValidatorsHash.Bytes(), valSet.Hash())
|
|
}
|
|
|
|
// Check we no longer have 2nd header (+header2+).
|
|
h, err = c.TrustedHeader(2)
|
|
assert.Error(t, err)
|
|
assert.Nil(t, h)
|
|
|
|
valSet, _, err = c.TrustedValidatorSet(2)
|
|
assert.Error(t, err)
|
|
assert.Nil(t, valSet)
|
|
}
|
|
|
|
// 2. options.Hash != trustedHeader.Hash
|
|
// This could happen if previous provider was lying to us.
|
|
{
|
|
trustedStore := dbs.New(dbm.NewMemDB(), chainID)
|
|
err := trustedStore.SaveSignedHeaderAndValidatorSet(h1, vals)
|
|
require.NoError(t, err)
|
|
|
|
// header1 != header
|
|
header1 := keys.GenSignedHeader(chainID, 1, bTime.Add(1*time.Hour), nil, vals, vals,
|
|
hash("app_hash"), hash("cons_hash"), hash("results_hash"), 0, len(keys))
|
|
|
|
header2 := keys.GenSignedHeader(chainID, 2, bTime.Add(2*time.Hour), nil, vals, vals,
|
|
hash("app_hash"), hash("cons_hash"), hash("results_hash"), 0, len(keys))
|
|
err = trustedStore.SaveSignedHeaderAndValidatorSet(header2, vals)
|
|
require.NoError(t, err)
|
|
|
|
primary := mockp.New(
|
|
chainID,
|
|
map[int64]*types.SignedHeader{
|
|
1: header1,
|
|
},
|
|
valSet,
|
|
)
|
|
|
|
c, err := light.NewClient(
|
|
chainID,
|
|
light.TrustOptions{
|
|
Period: 4 * time.Hour,
|
|
Height: 1,
|
|
Hash: header1.Hash(),
|
|
},
|
|
primary,
|
|
[]provider.Provider{primary},
|
|
trustedStore,
|
|
light.Logger(log.TestingLogger()),
|
|
)
|
|
require.NoError(t, err)
|
|
|
|
// Check we have swapped invalid 1st header (+header+) with correct one (+header1+).
|
|
h, err := c.TrustedHeader(1)
|
|
assert.NoError(t, err)
|
|
assert.NotNil(t, h)
|
|
assert.Equal(t, h.Hash(), header1.Hash())
|
|
|
|
valSet, _, err := c.TrustedValidatorSet(1)
|
|
assert.NoError(t, err)
|
|
assert.NotNil(t, valSet)
|
|
if assert.NotNil(t, valSet) {
|
|
assert.Equal(t, h.ValidatorsHash.Bytes(), valSet.Hash())
|
|
}
|
|
|
|
// Check we no longer have invalid 2nd header (+header2+).
|
|
h, err = c.TrustedHeader(2)
|
|
assert.Error(t, err)
|
|
assert.Nil(t, h)
|
|
|
|
valSet, _, err = c.TrustedValidatorSet(2)
|
|
assert.Error(t, err)
|
|
assert.Nil(t, valSet)
|
|
}
|
|
}
|
|
|
|
func TestClient_Update(t *testing.T) {
|
|
c, err := light.NewClient(
|
|
chainID,
|
|
trustOptions,
|
|
fullNode,
|
|
[]provider.Provider{fullNode},
|
|
dbs.New(dbm.NewMemDB(), chainID),
|
|
light.Logger(log.TestingLogger()),
|
|
)
|
|
require.NoError(t, err)
|
|
|
|
// should result in downloading & verifying header #3
|
|
h, err := c.Update(bTime.Add(2 * time.Hour))
|
|
assert.NoError(t, err)
|
|
if assert.NotNil(t, h) {
|
|
assert.EqualValues(t, 3, h.Height)
|
|
}
|
|
|
|
valSet, _, err := c.TrustedValidatorSet(3)
|
|
assert.NoError(t, err)
|
|
if assert.NotNil(t, valSet) {
|
|
assert.Equal(t, h.ValidatorsHash.Bytes(), valSet.Hash())
|
|
}
|
|
}
|
|
|
|
func TestClient_Concurrency(t *testing.T) {
|
|
c, err := light.NewClient(
|
|
chainID,
|
|
trustOptions,
|
|
fullNode,
|
|
[]provider.Provider{fullNode},
|
|
dbs.New(dbm.NewMemDB(), chainID),
|
|
light.Logger(log.TestingLogger()),
|
|
)
|
|
require.NoError(t, err)
|
|
|
|
_, err = c.VerifyHeaderAtHeight(2, bTime.Add(2*time.Hour))
|
|
require.NoError(t, err)
|
|
|
|
var wg sync.WaitGroup
|
|
for i := 0; i < 100; i++ {
|
|
wg.Add(1)
|
|
go func() {
|
|
defer wg.Done()
|
|
|
|
// NOTE: Cleanup, Stop, VerifyHeaderAtHeight and Verify are not supposed
|
|
// to be concurrenly safe.
|
|
|
|
assert.Equal(t, chainID, c.ChainID())
|
|
|
|
_, err := c.LastTrustedHeight()
|
|
assert.NoError(t, err)
|
|
|
|
_, err = c.FirstTrustedHeight()
|
|
assert.NoError(t, err)
|
|
|
|
h, err := c.TrustedHeader(1)
|
|
assert.NoError(t, err)
|
|
assert.NotNil(t, h)
|
|
|
|
vals, _, err := c.TrustedValidatorSet(2)
|
|
assert.NoError(t, err)
|
|
assert.NotNil(t, vals)
|
|
}()
|
|
}
|
|
|
|
wg.Wait()
|
|
}
|
|
|
|
func TestClientReplacesPrimaryWithWitnessIfPrimaryIsUnavailable(t *testing.T) {
|
|
c, err := light.NewClient(
|
|
chainID,
|
|
trustOptions,
|
|
deadNode,
|
|
[]provider.Provider{fullNode, fullNode},
|
|
dbs.New(dbm.NewMemDB(), chainID),
|
|
light.Logger(log.TestingLogger()),
|
|
light.MaxRetryAttempts(1),
|
|
)
|
|
|
|
require.NoError(t, err)
|
|
_, err = c.Update(bTime.Add(2 * time.Hour))
|
|
require.NoError(t, err)
|
|
|
|
assert.NotEqual(t, c.Primary(), deadNode)
|
|
assert.Equal(t, 1, len(c.Witnesses()))
|
|
}
|
|
|
|
func TestClient_BackwardsVerification(t *testing.T) {
|
|
{
|
|
trustHeader, _ := largeFullNode.SignedHeader(6)
|
|
c, err := light.NewClient(
|
|
chainID,
|
|
light.TrustOptions{
|
|
Period: 4 * time.Minute,
|
|
Height: trustHeader.Height,
|
|
Hash: trustHeader.Hash(),
|
|
},
|
|
largeFullNode,
|
|
[]provider.Provider{largeFullNode},
|
|
dbs.New(dbm.NewMemDB(), chainID),
|
|
light.Logger(log.TestingLogger()),
|
|
)
|
|
require.NoError(t, err)
|
|
|
|
// 1) verify before the trusted header using backwards => expect no error
|
|
h, err := c.VerifyHeaderAtHeight(5, bTime.Add(6*time.Minute))
|
|
require.NoError(t, err)
|
|
if assert.NotNil(t, h) {
|
|
assert.EqualValues(t, 5, h.Height)
|
|
}
|
|
|
|
// 2) untrusted header is expired but trusted header is not => expect no error
|
|
h, err = c.VerifyHeaderAtHeight(3, bTime.Add(8*time.Minute))
|
|
assert.NoError(t, err)
|
|
assert.NotNil(t, h)
|
|
|
|
// 3) already stored headers should return the header without error
|
|
h, err = c.VerifyHeaderAtHeight(5, bTime.Add(6*time.Minute))
|
|
assert.NoError(t, err)
|
|
assert.NotNil(t, h)
|
|
|
|
// 4a) First verify latest header
|
|
_, err = c.VerifyHeaderAtHeight(9, bTime.Add(9*time.Minute))
|
|
require.NoError(t, err)
|
|
|
|
// 4b) Verify backwards using bisection => expect no error
|
|
_, err = c.VerifyHeaderAtHeight(7, bTime.Add(10*time.Minute))
|
|
assert.NoError(t, err)
|
|
// shouldn't have verified this header in the process
|
|
_, err = c.TrustedHeader(8)
|
|
assert.Error(t, err)
|
|
|
|
// 5) trusted header has expired => expect error
|
|
_, err = c.VerifyHeaderAtHeight(1, bTime.Add(20*time.Minute))
|
|
assert.Error(t, err)
|
|
|
|
// 6) Try bisection method, but closest header (at 7) has expired
|
|
// so change to backwards => expect no error
|
|
_, err = c.VerifyHeaderAtHeight(8, bTime.Add(12*time.Minute))
|
|
assert.NoError(t, err)
|
|
|
|
}
|
|
{
|
|
testCases := []struct {
|
|
provider provider.Provider
|
|
}{
|
|
{
|
|
// 7) provides incorrect height
|
|
mockp.New(
|
|
chainID,
|
|
map[int64]*types.SignedHeader{
|
|
1: h1,
|
|
2: keys.GenSignedHeader(chainID, 1, bTime.Add(1*time.Hour), nil, vals, vals,
|
|
hash("app_hash"), hash("cons_hash"), hash("results_hash"), 0, len(keys)),
|
|
3: h3,
|
|
},
|
|
valSet,
|
|
),
|
|
},
|
|
{
|
|
// 8) provides incorrect hash
|
|
mockp.New(
|
|
chainID,
|
|
map[int64]*types.SignedHeader{
|
|
1: h1,
|
|
2: keys.GenSignedHeader(chainID, 2, bTime.Add(30*time.Minute), nil, vals, vals,
|
|
hash("app_hash"), hash("cons_hash"), hash("results_hash"), 0, len(keys)),
|
|
3: h3,
|
|
},
|
|
valSet,
|
|
),
|
|
},
|
|
}
|
|
|
|
for _, tc := range testCases {
|
|
c, err := light.NewClient(
|
|
chainID,
|
|
light.TrustOptions{
|
|
Period: 1 * time.Hour,
|
|
Height: 3,
|
|
Hash: h3.Hash(),
|
|
},
|
|
tc.provider,
|
|
[]provider.Provider{tc.provider},
|
|
dbs.New(dbm.NewMemDB(), chainID),
|
|
light.Logger(log.TestingLogger()),
|
|
)
|
|
require.NoError(t, err)
|
|
|
|
_, err = c.VerifyHeaderAtHeight(2, bTime.Add(1*time.Hour).Add(1*time.Second))
|
|
assert.Error(t, err)
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestClient_NewClientFromTrustedStore(t *testing.T) {
|
|
// 1) Initiate DB and fill with a "trusted" header
|
|
db := dbs.New(dbm.NewMemDB(), chainID)
|
|
err := db.SaveSignedHeaderAndValidatorSet(h1, vals)
|
|
require.NoError(t, err)
|
|
|
|
c, err := light.NewClientFromTrustedStore(
|
|
chainID,
|
|
trustPeriod,
|
|
deadNode,
|
|
[]provider.Provider{deadNode},
|
|
db,
|
|
)
|
|
require.NoError(t, err)
|
|
|
|
// 2) Check header exists (deadNode is being used to ensure we're not getting
|
|
// it from primary)
|
|
h, err := c.TrustedHeader(1)
|
|
assert.NoError(t, err)
|
|
assert.EqualValues(t, 1, h.Height)
|
|
|
|
valSet, _, err := c.TrustedValidatorSet(1)
|
|
assert.NoError(t, err)
|
|
assert.NotNil(t, valSet)
|
|
if assert.NotNil(t, valSet) {
|
|
assert.Equal(t, h.ValidatorsHash.Bytes(), valSet.Hash())
|
|
}
|
|
}
|
|
|
|
func TestNewClientErrorsIfAllWitnessesUnavailable(t *testing.T) {
|
|
_, err := light.NewClient(
|
|
chainID,
|
|
trustOptions,
|
|
fullNode,
|
|
[]provider.Provider{deadNode, deadNode},
|
|
dbs.New(dbm.NewMemDB(), chainID),
|
|
light.Logger(log.TestingLogger()),
|
|
light.MaxRetryAttempts(1),
|
|
)
|
|
if assert.Error(t, err) {
|
|
assert.Contains(t, err.Error(), "awaiting response from all witnesses exceeded dropout time")
|
|
}
|
|
}
|
|
|
|
func TestClientRemovesWitnessIfItSendsUsIncorrectHeader(t *testing.T) {
|
|
// different headers hash then primary plus less than 1/3 signed (no fork)
|
|
badProvider1 := mockp.New(
|
|
chainID,
|
|
map[int64]*types.SignedHeader{
|
|
1: h1,
|
|
2: keys.GenSignedHeaderLastBlockID(chainID, 2, bTime.Add(30*time.Minute), nil, vals, vals,
|
|
hash("app_hash2"), hash("cons_hash"), hash("results_hash"),
|
|
len(keys), len(keys), types.BlockID{Hash: h1.Hash()}),
|
|
},
|
|
map[int64]*types.ValidatorSet{
|
|
1: vals,
|
|
2: vals,
|
|
},
|
|
)
|
|
// header is empty
|
|
badProvider2 := mockp.New(
|
|
chainID,
|
|
map[int64]*types.SignedHeader{
|
|
1: h1,
|
|
2: h2,
|
|
3: {Header: nil, Commit: nil},
|
|
},
|
|
map[int64]*types.ValidatorSet{
|
|
1: vals,
|
|
2: vals,
|
|
},
|
|
)
|
|
|
|
c, err := light.NewClient(
|
|
chainID,
|
|
trustOptions,
|
|
fullNode,
|
|
[]provider.Provider{badProvider1, badProvider2},
|
|
dbs.New(dbm.NewMemDB(), chainID),
|
|
light.Logger(log.TestingLogger()),
|
|
light.MaxRetryAttempts(1),
|
|
)
|
|
// witness should have behaved properly -> no error
|
|
require.NoError(t, err)
|
|
assert.EqualValues(t, 2, len(c.Witnesses()))
|
|
|
|
// witness behaves incorrectly -> removed from list, no error
|
|
h, err := c.VerifyHeaderAtHeight(2, bTime.Add(2*time.Hour))
|
|
assert.NoError(t, err)
|
|
assert.EqualValues(t, 1, len(c.Witnesses()))
|
|
// header should still be verified
|
|
assert.EqualValues(t, 2, h.Height)
|
|
|
|
// no witnesses left to verify -> error
|
|
_, err = c.VerifyHeaderAtHeight(3, bTime.Add(2*time.Hour))
|
|
assert.Error(t, err)
|
|
assert.EqualValues(t, 0, len(c.Witnesses()))
|
|
}
|
|
|
|
func TestClientTrustedValidatorSet(t *testing.T) {
|
|
c, err := light.NewClient(
|
|
chainID,
|
|
trustOptions,
|
|
fullNode,
|
|
[]provider.Provider{fullNode},
|
|
dbs.New(dbm.NewMemDB(), chainID),
|
|
light.Logger(log.TestingLogger()),
|
|
)
|
|
|
|
require.NoError(t, err)
|
|
|
|
_, err = c.VerifyHeaderAtHeight(2, bTime.Add(2*time.Hour).Add(1*time.Second))
|
|
require.NoError(t, err)
|
|
|
|
valSet, height, err := c.TrustedValidatorSet(0)
|
|
assert.NoError(t, err)
|
|
assert.NotNil(t, valSet)
|
|
assert.EqualValues(t, 2, height)
|
|
}
|
|
|
|
func TestClientReportsConflictingHeadersEvidence(t *testing.T) {
|
|
// fullNode2 sends us different header
|
|
altH2 := keys.GenSignedHeaderLastBlockID(chainID, 2, bTime.Add(30*time.Minute), nil, vals, vals,
|
|
hash("app_hash2"), hash("cons_hash"), hash("results_hash"),
|
|
0, len(keys), types.BlockID{Hash: h1.Hash()})
|
|
fullNode2 := mockp.New(
|
|
chainID,
|
|
map[int64]*types.SignedHeader{
|
|
1: h1,
|
|
2: altH2,
|
|
},
|
|
map[int64]*types.ValidatorSet{
|
|
1: vals,
|
|
2: vals,
|
|
},
|
|
)
|
|
|
|
c, err := light.NewClient(
|
|
chainID,
|
|
trustOptions,
|
|
fullNode,
|
|
[]provider.Provider{fullNode2},
|
|
dbs.New(dbm.NewMemDB(), chainID),
|
|
light.Logger(log.TestingLogger()),
|
|
light.MaxRetryAttempts(1),
|
|
)
|
|
require.NoError(t, err)
|
|
|
|
// Check verification returns an error.
|
|
_, err = c.VerifyHeaderAtHeight(2, bTime.Add(2*time.Hour))
|
|
if assert.Error(t, err) {
|
|
assert.Contains(t, err.Error(), "does not match one")
|
|
}
|
|
|
|
// Check evidence was sent to both full nodes.
|
|
ev := types.ConflictingHeadersEvidence{H1: h2, H2: altH2}
|
|
assert.True(t, fullNode2.HasEvidence(ev))
|
|
assert.True(t, fullNode.HasEvidence(ev))
|
|
}
|
|
|
|
func TestClientEnsureValidHeadersAndValSets(t *testing.T) {
|
|
emptyValSet := &types.ValidatorSet{
|
|
Validators: nil,
|
|
Proposer: nil,
|
|
}
|
|
|
|
testCases := []struct {
|
|
headers map[int64]*types.SignedHeader
|
|
vals map[int64]*types.ValidatorSet
|
|
err bool
|
|
}{
|
|
{
|
|
headerSet,
|
|
valSet,
|
|
false,
|
|
},
|
|
{
|
|
headerSet,
|
|
map[int64]*types.ValidatorSet{
|
|
1: vals,
|
|
2: vals,
|
|
3: nil,
|
|
},
|
|
true,
|
|
},
|
|
{
|
|
map[int64]*types.SignedHeader{
|
|
1: h1,
|
|
2: h2,
|
|
3: nil,
|
|
},
|
|
valSet,
|
|
true,
|
|
},
|
|
{
|
|
headerSet,
|
|
map[int64]*types.ValidatorSet{
|
|
1: vals,
|
|
2: vals,
|
|
3: emptyValSet,
|
|
},
|
|
true,
|
|
},
|
|
}
|
|
|
|
for _, tc := range testCases {
|
|
badNode := mockp.New(
|
|
chainID,
|
|
tc.headers,
|
|
tc.vals,
|
|
)
|
|
c, err := light.NewClient(
|
|
chainID,
|
|
trustOptions,
|
|
badNode,
|
|
[]provider.Provider{badNode, badNode},
|
|
dbs.New(dbm.NewMemDB(), chainID),
|
|
light.MaxRetryAttempts(1),
|
|
)
|
|
require.NoError(t, err)
|
|
|
|
_, err = c.VerifyHeaderAtHeight(3, bTime.Add(2*time.Hour))
|
|
if tc.err {
|
|
assert.Error(t, err)
|
|
} else {
|
|
assert.NoError(t, err)
|
|
}
|
|
}
|
|
|
|
}
|