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dot11.go
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dot11.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 (
fieldProto = "Proto"
fieldDurationID = "DurationID"
fieldAddress1 = "Address1"
fieldAddress2 = "Address2"
fieldAddress3 = "Address3"
fieldAddress4 = "Address4"
fieldSequenceNumber = "SequenceNumber"
fieldFragmentNumber = "FragmentNumber"
fieldQOS = "QOS"
fieldHTControl = "HTControl"
)
var fieldsDot11 = []string{
fieldTimestamp,
fieldType, // int32
fieldProto, // int32
fieldFlags, // int32
fieldDurationID, // int32
fieldAddress1, // string
fieldAddress2, // string
fieldAddress3, // string
fieldAddress4, // string
fieldSequenceNumber, // int32
fieldFragmentNumber, // int32
fieldChecksum, // uint32
fieldQOS, // *Dot11QOS
fieldHTControl, // *Dot11HTControl
}
// CSVHeader returns the CSV header for the audit record.
func (d *Dot11) CSVHeader() []string {
return filter(fieldsDot11)
}
// CSVRecord returns the CSV record for the audit record.
func (d *Dot11) CSVRecord() []string {
return filter([]string{
formatTimestamp(d.Timestamp),
formatInt32(d.Type), // int32
formatInt32(d.Proto), // int32
formatInt32(d.Flags), // int32
formatInt32(d.DurationID), // int32
d.Address1, // string
d.Address2, // string
d.Address3, // string
d.Address4, // string
formatInt32(d.SequenceNumber), // int32
formatInt32(d.FragmentNumber), // int32
formatUint32(d.Checksum), // uint32
d.QOS.toString(), // *Dot11QOS
d.HTControl.toString(), // *Dot11HTControl
})
}
// Time returns the timestamp associated with the audit record.
func (d *Dot11) Time() int64 {
return d.Timestamp
}
func (d Dot11QOS) toString() string {
var b strings.Builder
b.WriteString(StructureBegin)
b.WriteString(formatInt32(d.TID))
b.WriteString(FieldSeparator)
b.WriteString(strconv.FormatBool(d.EOSP))
b.WriteString(FieldSeparator)
b.WriteString(formatInt32(d.AckPolicy))
b.WriteString(FieldSeparator)
b.WriteString(formatInt32(d.TXOP))
b.WriteString(StructureEnd)
return b.String()
}
func (d Dot11HTControl) toString() string {
var b strings.Builder
b.WriteString(StructureBegin)
b.WriteString(strconv.FormatBool(d.ACConstraint))
b.WriteString(FieldSeparator)
b.WriteString(strconv.FormatBool(d.RDGMorePPDU))
b.WriteString(FieldSeparator)
b.WriteString(d.VHT.toString())
b.WriteString(FieldSeparator)
b.WriteString(d.HT.toString())
b.WriteString(StructureEnd)
return b.String()
}
func (d *Dot11HTControlVHT) toString() string {
var b strings.Builder
b.WriteString(StructureBegin)
b.WriteString(strconv.FormatBool(d.MRQ))
b.WriteString(FieldSeparator)
b.WriteString(strconv.FormatBool(d.UnsolicitedMFB))
b.WriteString(FieldSeparator)
b.WriteString(formatInt32(d.MSI))
b.WriteString(FieldSeparator)
b.WriteString(d.MFB.toString())
b.WriteString(FieldSeparator)
b.WriteString(formatInt32(d.CompressedMSI))
b.WriteString(FieldSeparator)
b.WriteString(strconv.FormatBool(d.STBCIndication))
b.WriteString(FieldSeparator)
b.WriteString(formatInt32(d.MFSI))
b.WriteString(FieldSeparator)
b.WriteString(formatInt32(d.GID))
b.WriteString(FieldSeparator)
b.WriteString(formatInt32(d.CodingType))
b.WriteString(FieldSeparator)
b.WriteString(strconv.FormatBool(d.FbTXBeamformed))
b.WriteString(StructureEnd)
return b.String()
}
func (d *Dot11HTControlMFB) toString() string {
var b strings.Builder
b.WriteString(StructureBegin)
b.WriteString(formatInt32(d.NumSTS))
b.WriteString(FieldSeparator)
b.WriteString(formatInt32(d.VHTMCS))
b.WriteString(FieldSeparator)
b.WriteString(formatInt32(d.BW))
b.WriteString(FieldSeparator)
b.WriteString(formatInt32(d.SNR))
b.WriteString(StructureEnd)
return b.String()
}
func (d *Dot11HTControlHT) toString() string {
var b strings.Builder
b.WriteString(StructureBegin)
b.WriteString(d.LinkAdapationControl.toString())
b.WriteString(FieldSeparator)
b.WriteString(formatInt32(d.CalibrationPosition))
b.WriteString(FieldSeparator)
b.WriteString(formatInt32(d.CalibrationSequence))
b.WriteString(FieldSeparator)
b.WriteString(formatInt32(d.CSISteering))
b.WriteString(FieldSeparator)
b.WriteString(strconv.FormatBool(d.NDPAnnouncement))
b.WriteString(FieldSeparator)
b.WriteString(strconv.FormatBool(d.DEI))
b.WriteString(StructureEnd)
return b.String()
}
func (d *Dot11LinkAdapationControl) toString() string {
var b strings.Builder
b.WriteString(StructureBegin)
b.WriteString(strconv.FormatBool(d.TRQ))
b.WriteString(FieldSeparator)
b.WriteString(strconv.FormatBool(d.MRQ))
b.WriteString(FieldSeparator)
b.WriteString(formatInt32(d.MSI))
b.WriteString(FieldSeparator)
b.WriteString(formatInt32(d.MFSI))
b.WriteString(FieldSeparator)
b.WriteString(formatInt32(d.MFB))
b.WriteString(FieldSeparator)
b.WriteString(d.ASEL.toString())
b.WriteString(StructureEnd)
return b.String()
}
func (d *Dot11ASEL) toString() string {
var b strings.Builder
b.WriteString(StructureBegin)
b.WriteString(formatInt32(d.Command))
b.WriteString(FieldSeparator)
b.WriteString(formatInt32(d.Data))
b.WriteString(StructureEnd)
return b.String()
}
// JSON returns the JSON representation of the audit record.
func (d *Dot11) JSON() (string, error) {
// convert unix timestamp from nano to millisecond precision for elastic
d.Timestamp /= int64(time.Millisecond)
return jsonMarshaler.MarshalToString(d)
}
var dot11Metric = prometheus.NewCounterVec(
prometheus.CounterOpts{
Name: strings.ToLower(Type_NC_Dot11.String()),
Help: Type_NC_Dot11.String() + " audit records",
},
fieldsDot11[1:],
)
// Inc increments the metrics for the audit record.
func (d *Dot11) Inc() {
dot11Metric.WithLabelValues(d.CSVRecord()[1:]...).Inc()
}
// SetPacketContext sets the associated packet context for the audit record.
func (d *Dot11) SetPacketContext(*PacketContext) {}
// Src TODO: return Mac addr.
// Src returns the source address of the audit record.
func (d *Dot11) Src() string {
return ""
}
// Dst returns the destination address of the audit record.
func (d *Dot11) Dst() string {
return ""
}
var dot11Encoder = encoder.NewValueEncoder()
// Encode will encode categorical values and normalize according to configuration
func (d *Dot11) Encode() []string {
return filter([]string{
dot11Encoder.Int64(fieldTimestamp, d.Timestamp),
dot11Encoder.Int32(fieldType, d.Type), // int32
dot11Encoder.Int32(fieldProto, d.Proto), // int32
dot11Encoder.Int32(fieldFlags, d.Flags), // int32
dot11Encoder.Int32(fieldDurationID, d.DurationID), // int32
dot11Encoder.String(fieldAddress1, d.Address1), // string
dot11Encoder.String(fieldAddress2, d.Address2), // string
dot11Encoder.String(fieldAddress3, d.Address3), // string
dot11Encoder.String(fieldAddress4, d.Address4), // string
dot11Encoder.Int32(fieldSequenceNumber, d.SequenceNumber), // int32
dot11Encoder.Int32(fieldFragmentNumber, d.FragmentNumber), // int32
dot11Encoder.Uint32(fieldChecksum, d.Checksum), // uint32
// TODO: flatten
dot11Encoder.String(fieldQOS, d.QOS.toString()), // *Dot11QOS
dot11Encoder.String(fieldHTControl, d.HTControl.toString()), // *Dot11HTControl
})
}
// Analyze will invoke the configured analyzer for the audit record and return a score.
func (d *Dot11) Analyze() {
}
// NetcapType returns the type of the current audit record
func (d *Dot11) NetcapType() Type {
return Type_NC_Dot11
}