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sctp.go
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sctp.go
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/*
* NETCAP - Traffic Analysis Framework
* Copyright (c) 2017-2020 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 (
"github.com/dreadl0ck/netcap/encoder"
"strconv"
"strings"
"time"
"github.com/prometheus/client_golang/prometheus"
)
const fieldVerificationTag = "VerificationTag"
var fieldsSCTP = []string{
fieldTimestamp,
fieldSrcPort,
fieldDstPort,
fieldVerificationTag,
fieldChecksum,
fieldSrcIP,
fieldDstIP,
}
// CSVHeader returns the CSV header for the audit record.
func (s *SCTP) CSVHeader() []string {
return filter(fieldsSCTP)
}
// CSVRecord returns the CSV record for the audit record.
func (s *SCTP) CSVRecord() []string {
return filter([]string{
formatTimestamp(s.Timestamp),
formatInt32(s.SrcPort),
formatInt32(s.DstPort),
strconv.FormatUint(uint64(s.VerificationTag), 10),
strconv.FormatUint(uint64(s.Checksum), 10),
s.SrcIP,
s.DstIP,
})
}
// Time returns the timestamp associated with the audit record.
func (s *SCTP) Time() int64 {
return s.Timestamp
}
// JSON returns the JSON representation of the audit record.
func (u *SCTP) JSON() (string, error) {
// convert unix timestamp from nano to millisecond precision for elastic
u.Timestamp /= int64(time.Millisecond)
return jsonMarshaler.MarshalToString(u)
}
var sctpMetric = prometheus.NewCounterVec(
prometheus.CounterOpts{
Name: strings.ToLower(Type_NC_SCTP.String()),
Help: Type_NC_SCTP.String() + " audit records",
},
fieldsSCTP[1:],
)
// Inc increments the metrics for the audit record.
func (s *SCTP) Inc() {
sctpMetric.WithLabelValues(s.CSVRecord()[1:]...).Inc()
}
// SetPacketContext sets the associated packet context for the audit record.
func (s *SCTP) SetPacketContext(ctx *PacketContext) {
s.SrcIP = ctx.SrcIP
s.DstIP = ctx.DstIP
}
// Src returns the source address of the audit record.
func (s *SCTP) Src() string {
return s.SrcIP
}
// Dst returns the destination address of the audit record.
func (s *SCTP) Dst() string {
return s.DstIP
}
var sctpEncoder = encoder.NewValueEncoder()
// Encode will encode categorical values and normalize according to configuration
func (s *SCTP) Encode() []string {
return filter([]string{
sctpEncoder.Int64(fieldTimestamp, s.Timestamp),
sctpEncoder.Int32(fieldSrcPort, s.SrcPort),
sctpEncoder.Int32(fieldDstPort, s.DstPort),
sctpEncoder.Uint32(fieldVerificationTag, s.VerificationTag),
sctpEncoder.Uint32(fieldChecksum, s.Checksum),
sctpEncoder.String(fieldSrcIP, s.SrcIP),
sctpEncoder.String(fieldDstIP, s.DstIP),
})
}
// Analyze will invoke the configured analyzer for the audit record and return a score.
func (s *SCTP) Analyze() {}
// NetcapType returns the type of the current audit record
func (s *SCTP) NetcapType() Type {
return Type_NC_SCTP
}