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arp.go
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arp.go
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/*
* NETCAP - Traffic Analysis Framework
* Copyright (c) 2017 Philipp Mieden <dreadl0ck [at] protonmail [dot] ch>
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
package types
import (
"encoding/hex"
"strings"
"github.com/prometheus/client_golang/prometheus"
)
var fieldsARP = []string{
"Timestamp",
"AddrType", // int32
"Protocol", // int32
"HwAddressSize", // int32
"ProtAddressSize", // int32
"Operation", // int32
"SrcHwAddress", // []byte
"SrcProtAddress", // []byte
"DstHwAddress", // []byte
"DstProtAddress", // []byte
}
func (a ARP) CSVHeader() []string {
return filter(fieldsARP)
}
func (a ARP) CSVRecord() []string {
return filter([]string{
formatTimestamp(a.Timestamp),
formatInt32(a.AddrType), // int32
formatInt32(a.Protocol), // int32
formatInt32(a.HwAddressSize), // int32
formatInt32(a.ProtAddressSize), // int32
formatInt32(a.Operation), // int32
hex.EncodeToString(a.SrcHwAddress), // []byte
hex.EncodeToString(a.SrcProtAddress), // []byte
hex.EncodeToString(a.DstHwAddress), // []byte
hex.EncodeToString(a.DstProtAddress), // []byte
})
}
func (a ARP) Time() string {
return a.Timestamp
}
func (a ARP) JSON() (string, error) {
return jsonMarshaler.MarshalToString(&a)
}
var arpMetric = prometheus.NewCounterVec(
prometheus.CounterOpts{
Name: strings.ToLower(Type_NC_ARP.String()),
Help: Type_NC_ARP.String() + " audit records",
},
fieldsARP[1:],
)
func init() {
prometheus.MustRegister(arpMetric)
}
func (a ARP) Inc() {
arpMetric.WithLabelValues(a.CSVRecord()[1:]...).Inc()
}
func (a *ARP) SetPacketContext(ctx *PacketContext) {}
// TODO: preserve source and destination mac adresses for ARP and return them here
func (a ARP) Src() string {
return ""
}
// TODO: preserve source and destination mac adresses for ARP and return them here
func (a ARP) Dst() string {
return ""
}