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fix invalid packet len detection

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This commit is contained in:
Kusakabe Si 2021-12-10 19:09:04 +00:00
parent 3bd54ceb58
commit 32b674d629
1 changed files with 4 additions and 2 deletions
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6
device/receive.go
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@ -471,8 +471,10 @@ func (peer *Peer) RoutineSequentialReceiver() {
packet_type = elem.Type
packetlan = int(EgHeader.GetPacketLength() + path.EgHeaderLen)
if packetlan >= len(elem.packet) {
device.log.Errorf("received invalid packet content: %v S:%v D:%v From:%v IP:%v", base64.StdEncoding.EncodeToString([]byte(elem.packet)), src_nodeID.ToString(), dst_nodeID.ToString(), peer.ID.ToString(), peer.endpoint.DstToString())
if packetlan > len(elem.packet) {
if device.LogLevel.LogTransit {
fmt.Printf("Transit: invalid packet %v PL:%v RealPL:%v S:%v D:%v From:%v IP:%v\n", base64.StdEncoding.EncodeToString([]byte(elem.packet)), packetlan, len(elem.packet), src_nodeID.ToString(), dst_nodeID.ToString(), peer.ID.ToString(), peer.endpoint.DstToString())
}
goto skip
}
elem.packet = elem.packet[:packetlan] // EG header + true packet