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whisper: add check to matchSingleTopic

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This commit is contained in:
b00ris 2018-01-05 00:16:35 +03:00
parent 3b2ff9a71d
commit 40f686b21d
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2 changed files with 8 additions and 0 deletions
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4
whisper/whisperv5/filter.go
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@ -220,6 +220,10 @@ func matchSingleTopic(topic TopicType, bt []byte) bool {
bt = bt[:4] bt = bt[:4]
} }
if len(bt) < 4 {
return false
}
for j, b := range bt { for j, b := range bt {
if topic[j] != b { if topic[j] != b {
return false return false

4
whisper/whisperv6/filter.go
View file

@ -225,6 +225,10 @@ func matchSingleTopic(topic TopicType, bt []byte) bool {
bt = bt[:4] bt = bt[:4]
} }
if len(bt) < 4 {
return false
}
for j, b := range bt { for j, b := range bt {
if topic[j] != b { if topic[j] != b {
return false return false