mirror of
https://github.com/bettercap/bettercap
synced 2025-07-11 07:37:00 -07:00
60 lines
1.4 KiB
Go
60 lines
1.4 KiB
Go
package modules
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import (
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"strings"
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"github.com/bettercap/bettercap/core"
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"github.com/bettercap/bettercap/packets"
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"github.com/google/gopacket"
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"github.com/google/gopacket/layers"
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"github.com/miekg/dns"
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)
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func mdnsParser(ip *layers.IPv4, pkt gopacket.Packet, udp *layers.UDP) bool {
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if udp.SrcPort == packets.MDNSPort && udp.DstPort == packets.MDNSPort {
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var msg dns.Msg
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if err := msg.Unpack(udp.Payload); err == nil && msg.Opcode == dns.OpcodeQuery && len(msg.Answer) > 0 {
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m := make(map[string][]string)
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for _, answer := range append(msg.Answer, msg.Extra...) {
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switch rr := answer.(type) {
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case *dns.A:
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name := rr.Header().Name
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if _, found := m[name]; found == false {
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m[name] = make([]string, 0)
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}
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m[name] = append(m[name], answer.(*dns.A).A.String())
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case *dns.AAAA:
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name := rr.Header().Name
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if _, found := m[name]; found == false {
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m[name] = make([]string, 0)
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}
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m[name] = append(m[name], answer.(*dns.AAAA).AAAA.String())
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}
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}
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for hostname, ips := range m {
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NewSnifferEvent(
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pkt.Metadata().Timestamp,
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"mdns",
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ip.SrcIP.String(),
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ip.DstIP.String(),
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nil,
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"%s %s : %s is %s",
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core.W(core.BG_DGRAY+core.FG_WHITE, "mdns"),
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vIP(ip.SrcIP),
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core.Yellow(hostname),
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core.Dim(strings.Join(ips, ", ")),
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).Push()
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}
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return true
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}
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}
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return false
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}
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