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consensus: check transactions count during PrepareRequest verification

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This commit is contained in:
Anna Shaleva 2021-03-09 21:30:09 +03:00
parent 23a3514cc0
commit 38103dcc7a
2 changed files with 14 additions and 3 deletions
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10
pkg/consensus/consensus.go
View file

@ -466,9 +466,10 @@ func (s *service) verifyBlock(b block.Block) bool {
}
var (
errInvalidPrevHash = errors.New("invalid PrevHash")
errInvalidVersion = errors.New("invalid Version")
errInvalidStateRoot = errors.New("state root mismatch")
errInvalidPrevHash = errors.New("invalid PrevHash")
errInvalidVersion = errors.New("invalid Version")
errInvalidStateRoot = errors.New("state root mismatch")
errInvalidTransactionsCount = errors.New("invalid transactions count")
)
func (s *service) verifyRequest(p payload.ConsensusPayload) error {
@ -487,6 +488,9 @@ func (s *service) verifyRequest(p payload.ConsensusPayload) error {
return fmt.Errorf("%w: %s != %s", errInvalidStateRoot, sr.Root, req.stateRoot)
}
}
if len(req.TransactionHashes()) > int(s.ProtocolConfiguration.MaxTransactionsPerBlock) {
return fmt.Errorf("%w: max = %d, got %d", errInvalidTransactionsCount, s.ProtocolConfiguration.MaxTransactionsPerBlock, len(req.TransactionHashes()))
}
// Save lastProposal for getVerified().
s.lastProposal = req.transactionHashes

7
pkg/consensus/consensus_test.go
View file

@ -323,6 +323,13 @@ func TestService_PrepareRequest(t *testing.T) {
sr, err := srv.Chain.GetStateModule().GetStateRoot(srv.dbft.BlockIndex - 1)
require.NoError(t, err)
checkRequest(t, errInvalidTransactionsCount, &prepareRequest{stateRootEnabled: true,
prevHash: prevHash,
stateRoot: sr.Root,
transactionHashes: make([]util.Uint256, srv.ProtocolConfiguration.MaxTransactionsPerBlock+1),
})
checkRequest(t, nil, &prepareRequest{
stateRootEnabled: true,
prevHash: prevHash,