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net_sniff_udp.go
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/
net_sniff_udp.go
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package net_sniff
import (
"fmt"
"net"
"github.com/google/gopacket"
"github.com/google/gopacket/layers"
"github.com/evilsocket/islazy/tui"
)
var udpParsers = []func(net.IP, net.IP, []byte, gopacket.Packet, *layers.UDP) bool{
dnsParser,
mdnsParser,
krb5Parser,
upnpParser,
}
func onUDP(srcIP, dstIP net.IP, payload []byte, pkt gopacket.Packet, verbose bool) {
udp := pkt.Layer(layers.LayerTypeUDP).(*layers.UDP)
for _, parser := range udpParsers {
if parser(srcIP, dstIP, payload, pkt, udp) {
return
}
}
if verbose {
sz := len(payload)
NewSnifferEvent(
pkt.Metadata().Timestamp,
"udp",
fmt.Sprintf("%s:%s", srcIP, vPort(udp.SrcPort)),
fmt.Sprintf("%s:%s", dstIP, vPort(udp.DstPort)),
SniffData{
"Size": sz,
},
"%s %s:%s > %s:%s %s",
tui.Wrap(tui.BACKDARKGRAY+tui.FOREWHITE, "udp"),
vIP(srcIP),
vPort(udp.SrcPort),
vIP(dstIP),
vPort(udp.DstPort),
tui.Dim(fmt.Sprintf("%d bytes", sz)),
).Push()
}
}