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eth.go
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eth.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 (
"strings"
"github.com/prometheus/client_golang/prometheus"
)
var fieldsEthernet = []string{
"Timestamp",
"SrcMAC", // string
"DstMAC", // string
"EthernetType", // int32
"PayloadEntropy", // float64
"PayloadSize", // int32
}
func (e Ethernet) CSVHeader() []string {
return filter(fieldsEthernet)
}
func (e Ethernet) CSVRecord() []string {
return filter([]string{
formatTimestamp(e.Timestamp),
e.SrcMAC, // string
e.DstMAC, // string
formatInt32(e.EthernetType), // int32
formatFloat64(e.PayloadEntropy), // float64
formatInt32(e.PayloadSize), // int32
})
}
func (e Ethernet) Time() string {
return e.Timestamp
}
func (a Ethernet) JSON() (string, error) {
return jsonMarshaler.MarshalToString(&a)
}
var (
ethernetMetric = prometheus.NewCounterVec(
prometheus.CounterOpts{
Name: strings.ToLower(Type_NC_Ethernet.String()),
Help: Type_NC_Ethernet.String() + " audit records",
},
fieldsEthernetMetrics,
)
ethernetPayloadEntropy = prometheus.NewHistogramVec(
prometheus.HistogramOpts{
Name: strings.ToLower(Type_NC_Ethernet.String()) + "_entropy",
Help: Type_NC_Ethernet.String() + " payload entropy",
Buckets: prometheus.LinearBuckets(20, 5, 5),
},
// fieldsEthernetMetrics,
[]string{},
)
ethernetPayloadSize = prometheus.NewHistogramVec(
prometheus.HistogramOpts{
Name: strings.ToLower(Type_NC_Ethernet.String()) + "_size",
Help: Type_NC_Ethernet.String() + " payload sizes",
Buckets: prometheus.LinearBuckets(20, 5, 5),
},
// fieldsEthernetMetrics,
[]string{},
)
)
var fieldsEthernetMetrics = []string{
"SrcMAC", // string
"DstMAC", // string
"EthernetType", // int32
}
func (e Ethernet) metricValues() []string {
return []string{
e.SrcMAC, // string
e.DstMAC, // string
formatInt32(e.EthernetType), // int32
}
}
func init() {
prometheus.MustRegister(ethernetMetric)
prometheus.MustRegister(ethernetPayloadEntropy)
prometheus.MustRegister(ethernetPayloadSize)
}
func (a Ethernet) Inc() {
ethernetMetric.WithLabelValues(a.metricValues()...).Inc()
ethernetPayloadEntropy.WithLabelValues().Observe(a.PayloadEntropy)
ethernetPayloadSize.WithLabelValues().Observe(float64(a.PayloadSize))
}
func (a *Ethernet) SetPacketContext(ctx *PacketContext) {}
func (a Ethernet) Src() string {
return a.SrcMAC
}
func (a Ethernet) Dst() string {
return a.DstMAC
}