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eth/filters: exit early if topics-filter has more than 4 topics #28494 (#1503)

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Daniel Liu 2025-09-17 08:20:18 +08:00 committed by GitHub
parent 35e5143fe7
commit 7b92ec7d5a
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2 changed files with 7 additions and 0 deletions
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3
eth/filters/filter_system.go
View file

@ -300,6 +300,9 @@ func (es *EventSystem) subscribe(sub *subscription) *Subscription {
// given criteria to the given logs channel. Default value for the from and to
// block is "latest". If the fromBlock > toBlock an error is returned.
func (es *EventSystem) SubscribeLogs(crit ethereum.FilterQuery, logs chan []*types.Log) (*Subscription, error) {
if len(crit.Topics) > maxTopics {
return nil, errExceedMaxTopics
}
var from, to rpc.BlockNumber
if crit.FromBlock == nil {
from = rpc.LatestBlockNumber

4
eth/filters/filter_system_test.go
View file

@ -320,6 +320,8 @@ func TestLogFilterCreation(t *testing.T) {
{FilterCriteria{FromBlock: big.NewInt(rpc.PendingBlockNumber.Int64()), ToBlock: big.NewInt(100)}, false},
// from block "higher" than to block
{FilterCriteria{FromBlock: big.NewInt(rpc.PendingBlockNumber.Int64()), ToBlock: big.NewInt(rpc.LatestBlockNumber.Int64())}, false},
// topics more than 4
{FilterCriteria{Topics: [][]common.Hash{{}, {}, {}, {}, {}}}, false},
}
)
@ -351,6 +353,7 @@ func TestInvalidLogFilterCreation(t *testing.T) {
0: {FromBlock: big.NewInt(rpc.PendingBlockNumber.Int64()), ToBlock: big.NewInt(rpc.LatestBlockNumber.Int64())},
1: {FromBlock: big.NewInt(rpc.PendingBlockNumber.Int64()), ToBlock: big.NewInt(100)},
2: {FromBlock: big.NewInt(rpc.LatestBlockNumber.Int64()), ToBlock: big.NewInt(100)},
3: {Topics: [][]common.Hash{{}, {}, {}, {}, {}}},
}
for i, test := range testCases {
@ -376,6 +379,7 @@ func TestInvalidGetLogsRequest(t *testing.T) {
0: {BlockHash: &blockHash, FromBlock: big.NewInt(100)},
1: {BlockHash: &blockHash, ToBlock: big.NewInt(500)},
2: {BlockHash: &blockHash, FromBlock: big.NewInt(rpc.LatestBlockNumber.Int64())},
3: {BlockHash: &blockHash, Topics: [][]common.Hash{{}, {}, {}, {}, {}}},
}
for i, test := range testCases {