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connection.go
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connection.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 fieldsConnection = []string{
"TimestampFirst",
"LinkProto",
"NetworkProto",
"TransportProto",
"ApplicationProto",
"SrcMAC",
"DstMAC",
"SrcIP",
"SrcPort",
"DstIP",
"DstPort",
"TotalSize",
"AppPayloadSize",
"NumPackets",
"UID",
"Duration",
"TimestampLast",
}
func (c Connection) CSVHeader() []string {
return filter(fieldsConnection)
}
func (c Connection) CSVRecord() []string {
return filter([]string{
formatTimestamp(c.TimestampFirst),
c.LinkProto,
c.NetworkProto,
c.TransportProto,
c.ApplicationProto,
c.SrcMAC,
c.DstMAC,
c.SrcIP,
c.SrcPort,
c.DstIP,
c.DstPort,
formatInt32(c.TotalSize),
formatInt32(c.AppPayloadSize),
formatInt32(c.NumPackets),
c.UID,
formatInt64(c.Duration),
formatTimestamp(c.TimestampLast),
})
}
func (c Connection) NetcapTimestamp() string {
return c.TimestampFirst
}
func (a Connection) JSON() (string, error) {
return jsonMarshaler.MarshalToString(&a)
}
var (
connectionsMetric = prometheus.NewCounterVec(
prometheus.CounterOpts{
Name: strings.ToLower(Type_NC_Connection.String()),
Help: Type_NC_Connection.String() + " audit records",
},
fieldsConnectionMetrics,
)
connTotalSize = prometheus.NewHistogramVec(
prometheus.HistogramOpts{
Name: strings.ToLower(Type_NC_Connection.String()) + "_size",
Help: Type_NC_Connection.String() + " payload entropy",
Buckets: prometheus.LinearBuckets(20, 5, 5),
},
[]string{"SrcMAC", "DstMAC"},
)
connAppPayloadSize = prometheus.NewHistogramVec(
prometheus.HistogramOpts{
Name: strings.ToLower(Type_NC_Connection.String()) + "_payload_size",
Help: Type_NC_Connection.String() + " payload sizes",
Buckets: prometheus.LinearBuckets(20, 5, 5),
},
[]string{"SrcMAC", "DstMAC"},
)
connNumPackets = prometheus.NewHistogramVec(
prometheus.HistogramOpts{
Name: strings.ToLower(Type_NC_Connection.String()) + "_numpackets",
Help: Type_NC_Connection.String() + " payload sizes",
Buckets: prometheus.LinearBuckets(20, 5, 5),
},
[]string{"SrcMAC", "DstMAC"},
)
connDuration = prometheus.NewHistogramVec(
prometheus.HistogramOpts{
Name: strings.ToLower(Type_NC_Connection.String()) + "_duration",
Help: Type_NC_Connection.String() + " payload sizes",
Buckets: prometheus.LinearBuckets(20, 5, 5),
},
[]string{"SrcMAC", "DstMAC"},
)
)
var fieldsConnectionMetrics = []string{
"LinkProto",
"NetworkProto",
"TransportProto",
"ApplicationProto",
"SrcMAC",
"DstMAC",
"SrcIP",
"SrcPort",
"DstIP",
"DstPort",
}
func (f Connection) metricValues() []string {
return []string{
f.LinkProto,
f.NetworkProto,
f.TransportProto,
f.ApplicationProto,
f.SrcMAC,
f.DstMAC,
f.SrcIP,
f.SrcPort,
f.DstIP,
f.DstPort,
}
}
func init() {
prometheus.MustRegister(connectionsMetric)
prometheus.MustRegister(connTotalSize)
prometheus.MustRegister(connAppPayloadSize)
prometheus.MustRegister(connNumPackets)
prometheus.MustRegister(connDuration)
}
func (a Connection) Inc() {
connectionsMetric.WithLabelValues(a.metricValues()...).Inc()
connTotalSize.WithLabelValues(a.SrcMAC, a.DstMAC).Observe(float64(a.TotalSize))
connAppPayloadSize.WithLabelValues(a.SrcMAC, a.DstMAC).Observe(float64(a.AppPayloadSize))
connNumPackets.WithLabelValues(a.SrcMAC, a.DstMAC).Observe(float64(a.NumPackets))
connDuration.WithLabelValues(a.SrcMAC, a.DstMAC).Observe(float64(a.Duration))
}