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misc: small fix or general refactoring i did not bother commenting

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evilsocket 2018-09-09 14:02:36 +03:00
commit 632f7700bf
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1 changed files with 7 additions and 1 deletions
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8
packets/mdns.go
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@ -20,6 +20,12 @@ var (
func MDNSGetMeta(pkt gopacket.Packet) map[string]string {
meta := make(map[string]string)
defer func() {
if r := recover(); r != nil {
meta = nil
}
}()
if ludp := pkt.Layer(layers.LayerTypeUDP); ludp != nil {
if udp := ludp.(*layers.UDP); udp != nil && udp.SrcPort == MDNSPort && udp.DstPort == MDNSPort {
dns := layers.DNS{}
@ -47,7 +53,7 @@ func MDNSGetMeta(pkt gopacket.Packet) map[string]string {
}
}
if len(meta) > 0 {
if meta != nil && len(meta) > 0 {
return meta
}
return nil