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dot11.go
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dot11.go
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// Copyright 2014 Google, Inc. All rights reserved.
//
// Use of this source code is governed by a BSD-style license
// that can be found in the LICENSE file in the root of the source
// tree.
// See http://standards.ieee.org/findstds/standard/802.11-2012.html for info on
// all of the layers in this file.
package layers
import (
"bytes"
"encoding/binary"
"fmt"
"github.com/tsg/gopacket"
"hash/crc32"
"net"
)
// Dot11Flags contains the set of 8 flags in the IEEE 802.11 frame control
// header, all in one place.
type Dot11Flags uint8
const (
Dot11FlagsToDS Dot11Flags = 1 << iota
Dot11FlagsFromDS
Dot11FlagsMF
Dot11FlagsRetry
Dot11FlagsPowerManagement
Dot11FlagsMD
Dot11FlagsWEP
Dot11FlagsOrder
)
func (d Dot11Flags) ToDS() bool {
return d&Dot11FlagsToDS != 0
}
func (d Dot11Flags) FromDS() bool {
return d&Dot11FlagsFromDS != 0
}
func (d Dot11Flags) MF() bool {
return d&Dot11FlagsMF != 0
}
func (d Dot11Flags) Retry() bool {
return d&Dot11FlagsRetry != 0
}
func (d Dot11Flags) PowerManagement() bool {
return d&Dot11FlagsPowerManagement != 0
}
func (d Dot11Flags) MD() bool {
return d&Dot11FlagsMD != 0
}
func (d Dot11Flags) WEP() bool {
return d&Dot11FlagsWEP != 0
}
func (d Dot11Flags) Order() bool {
return d&Dot11FlagsOrder != 0
}
// String provides a human readable string for Dot11Flags.
// This string is possibly subject to change over time; if you're storing this
// persistently, you should probably store the Dot11Flags value, not its string.
func (a Dot11Flags) String() string {
var out bytes.Buffer
if a.ToDS() {
out.WriteString("TO-DS,")
}
if a.FromDS() {
out.WriteString("FROM-DS,")
}
if a.MF() {
out.WriteString("MF,")
}
if a.Retry() {
out.WriteString("Retry,")
}
if a.PowerManagement() {
out.WriteString("PowerManagement,")
}
if a.MD() {
out.WriteString("MD,")
}
if a.WEP() {
out.WriteString("WEP,")
}
if a.Order() {
out.WriteString("Order,")
}
if length := out.Len(); length > 0 {
return string(out.Bytes()[:length-1]) // strip final comma
}
return ""
}
type Dot11Reason uint16
// TODO: Verify these reasons, and append more reasons if necessary.
const (
Dot11ReasonReserved Dot11Reason = 1
Dot11ReasonUnspecified Dot11Reason = 2
Dot11ReasonAuthExpired Dot11Reason = 3
Dot11ReasonDeauthStLeaving Dot11Reason = 4
Dot11ReasonInactivity Dot11Reason = 5
Dot11ReasonApFull Dot11Reason = 6
Dot11ReasonClass2FromNonAuth Dot11Reason = 7
Dot11ReasonClass3FromNonAss Dot11Reason = 8
Dot11ReasonDisasStLeaving Dot11Reason = 9
Dot11ReasonStNotAuth Dot11Reason = 10
)
// String provides a human readable string for Dot11Reason.
// This string is possibly subject to change over time; if you're storing this
// persistently, you should probably store the Dot11Reason value, not its string.
func (a Dot11Reason) String() string {
switch a {
case Dot11ReasonReserved:
return "Reserved"
case Dot11ReasonUnspecified:
return "Unspecified"
case Dot11ReasonAuthExpired:
return "Auth. expired"
case Dot11ReasonDeauthStLeaving:
return "Deauth. st. leaving"
case Dot11ReasonInactivity:
return "Inactivity"
case Dot11ReasonApFull:
return "Ap. full"
case Dot11ReasonClass2FromNonAuth:
return "Class2 from non auth."
case Dot11ReasonClass3FromNonAss:
return "Class3 from non ass."
case Dot11ReasonDisasStLeaving:
return "Disass st. leaving"
case Dot11ReasonStNotAuth:
return "St. not auth."
default:
return "Unknown reason"
}
}
type Dot11Status uint16
const (
Dot11StatusSuccess Dot11Status = 0
Dot11StatusFailure Dot11Status = 1 // Unspecified failure
Dot11StatusCannotSupportAllCapabilities Dot11Status = 10 // Cannot support all requested capabilities in the Capability Information field
Dot11StatusInabilityExistsAssociation Dot11Status = 11 // Reassociation denied due to inability to confirm that association exists
Dot11StatusAssociationDenied Dot11Status = 12 // Association denied due to reason outside the scope of this standard
Dot11StatusAlgorithmUnsupported Dot11Status = 13 // Responding station does not support the specified authentication algorithm
Dot11StatusOufOfExpectedSequence Dot11Status = 14 // Received an Authentication frame with authentication transaction sequence number out of expected sequence
Dot11StatusChallengeFailure Dot11Status = 15 // Authentication rejected because of challenge failure
Dot11StatusTimeout Dot11Status = 16 // Authentication rejected due to timeout waiting for next frame in sequence
Dot11StatusAPUnableToHandle Dot11Status = 17 // Association denied because AP is unable to handle additional associated stations
Dot11StatusRateUnsupported Dot11Status = 18 // Association denied due to requesting station not supporting all of the data rates in the BSSBasicRateSet parameter
)
// String provides a human readable string for Dot11Status.
// This string is possibly subject to change over time; if you're storing this
// persistently, you should probably store the Dot11Status value, not its string.
func (a Dot11Status) String() string {
switch a {
case Dot11StatusSuccess:
return "success"
case Dot11StatusFailure:
return "failure"
case Dot11StatusCannotSupportAllCapabilities:
return "cannot-support-all-capabilities"
case Dot11StatusInabilityExistsAssociation:
return "inability-exists-association"
case Dot11StatusAssociationDenied:
return "association-denied"
case Dot11StatusAlgorithmUnsupported:
return "algorithm-unsupported"
case Dot11StatusOufOfExpectedSequence:
return "out-of-expected-sequence"
case Dot11StatusChallengeFailure:
return "challenge-failure"
case Dot11StatusTimeout:
return "timeout"
case Dot11StatusAPUnableToHandle:
return "ap-unable-to-handle"
case Dot11StatusRateUnsupported:
return "rate-unsupported"
default:
return "unknown status"
}
}
type Dot11AckPolicy uint8
const (
Dot11AckPolicyNormal Dot11AckPolicy = 0
Dot11AckPolicyNone Dot11AckPolicy = 1
Dot11AckPolicyNoExplicit Dot11AckPolicy = 2
Dot11AckPolicyBlock Dot11AckPolicy = 3
)
// String provides a human readable string for Dot11AckPolicy.
// This string is possibly subject to change over time; if you're storing this
// persistently, you should probably store the Dot11AckPolicy value, not its string.
func (a Dot11AckPolicy) String() string {
switch a {
case Dot11AckPolicyNormal:
return "normal-ack"
case Dot11AckPolicyNone:
return "no-ack"
case Dot11AckPolicyNoExplicit:
return "no-explicit-ack"
case Dot11AckPolicyBlock:
return "block-ack"
default:
return "unknown-ack-policy"
}
}
type Dot11Algorithm uint16
const (
Dot11AlgorithmOpen Dot11Algorithm = 0
Dot11AlgorithmSharedKey Dot11Algorithm = 1
)
// String provides a human readable string for Dot11Algorithm.
// This string is possibly subject to change over time; if you're storing this
// persistently, you should probably store the Dot11Algorithm value, not its string.
func (a Dot11Algorithm) String() string {
switch a {
case Dot11AlgorithmOpen:
return "open"
case Dot11AlgorithmSharedKey:
return "shared-key"
default:
return "unknown-algorithm"
}
}
type Dot11InformationElementID uint8
// TODO: Verify these element ids, and append more ids if more.
const (
Dot11InformationElementIDSSID Dot11InformationElementID = 0
Dot11InformationElementIDRates Dot11InformationElementID = 1
Dot11InformationElementIDFHSet Dot11InformationElementID = 2
Dot11InformationElementIDDSSet Dot11InformationElementID = 3
Dot11InformationElementIDCFSet Dot11InformationElementID = 4
Dot11InformationElementIDTIM Dot11InformationElementID = 5
Dot11InformationElementIDIBSSSet Dot11InformationElementID = 6
Dot11InformationElementIDChallenge Dot11InformationElementID = 16
Dot11InformationElementIDERPInfo Dot11InformationElementID = 42
Dot11InformationElementIDQOSCapability Dot11InformationElementID = 46
Dot11InformationElementIDERPInfo2 Dot11InformationElementID = 47
Dot11InformationElementIDRSNInfo Dot11InformationElementID = 48
Dot11InformationElementIDESRates Dot11InformationElementID = 50
Dot11InformationElementIDVendor Dot11InformationElementID = 221
Dot11InformationElementIDReserved Dot11InformationElementID = 68
)
// String provides a human readable string for Dot11InformationElementID.
// This string is possibly subject to change over time; if you're storing this
// persistently, you should probably store the Dot11InformationElementID value,
// not its string.
func (a Dot11InformationElementID) String() string {
switch a {
case Dot11InformationElementIDSSID:
return "SSID"
case Dot11InformationElementIDRates:
return "Rates"
case Dot11InformationElementIDFHSet:
return "FHset"
case Dot11InformationElementIDDSSet:
return "DSset"
case Dot11InformationElementIDCFSet:
return "CFset"
case Dot11InformationElementIDTIM:
return "TIM"
case Dot11InformationElementIDIBSSSet:
return "IBSSset"
case Dot11InformationElementIDChallenge:
return "Challenge"
case Dot11InformationElementIDERPInfo:
return "ERPinfo"
case Dot11InformationElementIDQOSCapability:
return "QOS capability"
case Dot11InformationElementIDERPInfo2:
return "ERPinfo2"
case Dot11InformationElementIDRSNInfo:
return "RSNinfo"
case Dot11InformationElementIDESRates:
return "ESrates"
case Dot11InformationElementIDVendor:
return "Vendor"
case Dot11InformationElementIDReserved:
return "Reserved"
default:
return "Unknown information element id"
}
}
// Dot11 provides an IEEE 802.11 base packet header.
// See http://standards.ieee.org/findstds/standard/802.11-2012.html
// for excrutiating detail.
type Dot11 struct {
BaseLayer
Type Dot11Type
Proto uint8
Flags Dot11Flags
DurationID uint16
Address1 net.HardwareAddr
Address2 net.HardwareAddr
Address3 net.HardwareAddr
Address4 net.HardwareAddr
SequenceNumber uint16
FragmentNumber uint16
Checksum uint32
}
func decodeDot11(data []byte, p gopacket.PacketBuilder) error {
d := &Dot11{}
return decodingLayerDecoder(d, data, p)
}
func (m *Dot11) LayerType() gopacket.LayerType { return LayerTypeDot11 }
func (m *Dot11) CanDecode() gopacket.LayerClass { return LayerTypeDot11 }
func (m *Dot11) NextLayerType() gopacket.LayerType {
if m.Flags.WEP() {
return (LayerTypeDot11WEP)
}
return m.Type.LayerType()
}
func (m *Dot11) DecodeFromBytes(data []byte, df gopacket.DecodeFeedback) error {
m.Type = Dot11Type((data[0])&0xFC) >> 2
m.Proto = uint8(data[0]) & 0x0003
m.Flags = Dot11Flags(data[1])
m.DurationID = binary.LittleEndian.Uint16(data[2:4])
m.Address1 = net.HardwareAddr(data[4:10])
offset := 10
mainType := m.Type.MainType()
switch mainType {
case Dot11TypeCtrl:
switch m.Type {
case Dot11TypeCtrlRTS, Dot11TypeCtrlPowersavePoll, Dot11TypeCtrlCFEnd, Dot11TypeCtrlCFEndAck:
m.Address2 = net.HardwareAddr(data[offset : offset+6])
offset += 6
}
case Dot11TypeMgmt, Dot11TypeData:
m.Address2 = net.HardwareAddr(data[offset : offset+6])
offset += 6
m.Address3 = net.HardwareAddr(data[offset : offset+6])
offset += 6
m.SequenceNumber = (binary.LittleEndian.Uint16(data[offset:offset+2]) & 0xFFC0) >> 6
m.FragmentNumber = (binary.LittleEndian.Uint16(data[offset:offset+2]) & 0x003F)
offset += 2
}
if mainType == Dot11TypeData && m.Flags.FromDS() && m.Flags.ToDS() {
m.Address4 = net.HardwareAddr(data[offset : offset+6])
offset += 6
}
if mainType == Dot11TypeData {
m.BaseLayer = BaseLayer{Contents: data[0:offset], Payload: data[offset:len(data)]}
} else {
m.BaseLayer = BaseLayer{Contents: data[0:offset], Payload: data[offset : len(data)-4]}
m.Checksum = binary.LittleEndian.Uint32(data[len(data)-4 : len(data)])
}
return nil
}
func (m *Dot11) ChecksumValid() bool {
// only for CTRL and MGMT frames
h := crc32.NewIEEE()
h.Write(m.Contents)
h.Write(m.Payload)
return m.Checksum == h.Sum32()
}
// Dot11Mgmt is a base for all IEEE 802.11 management layers.
type Dot11Mgmt struct {
BaseLayer
}
func (m *Dot11Mgmt) NextLayerType() gopacket.LayerType { return gopacket.LayerTypePayload }
func (m *Dot11Mgmt) DecodeFromBytes(data []byte, df gopacket.DecodeFeedback) error {
m.Contents = data
return nil
}
// Dot11Ctrl is a base for all IEEE 802.11 control layers.
type Dot11Ctrl struct {
BaseLayer
}
func (m *Dot11Ctrl) NextLayerType() gopacket.LayerType { return gopacket.LayerTypePayload }
func (m *Dot11Ctrl) LayerType() gopacket.LayerType { return LayerTypeDot11Ctrl }
func (m *Dot11Ctrl) CanDecode() gopacket.LayerClass { return LayerTypeDot11Ctrl }
func (m *Dot11Ctrl) DecodeFromBytes(data []byte, df gopacket.DecodeFeedback) error {
m.Contents = data
return nil
}
func decodeDot11Ctrl(data []byte, p gopacket.PacketBuilder) error {
d := &Dot11Ctrl{}
return decodingLayerDecoder(d, data, p)
}
// Dot11WEP contains WEP encrpted IEEE 802.11 data.
type Dot11WEP struct {
BaseLayer
}
func (m *Dot11WEP) NextLayerType() gopacket.LayerType { return LayerTypeLLC }
func (m *Dot11WEP) LayerType() gopacket.LayerType { return LayerTypeDot11WEP }
func (m *Dot11WEP) CanDecode() gopacket.LayerClass { return LayerTypeDot11WEP }
func (m *Dot11WEP) DecodeFromBytes(data []byte, df gopacket.DecodeFeedback) error {
m.Contents = data
return nil
}
func decodeDot11WEP(data []byte, p gopacket.PacketBuilder) error {
d := &Dot11WEP{}
return decodingLayerDecoder(d, data, p)
}
// Dot11Data is a base for all IEEE 802.11 data layers.
type Dot11Data struct {
BaseLayer
}
func (m *Dot11Data) NextLayerType() gopacket.LayerType { return LayerTypeLLC }
func (m *Dot11Data) LayerType() gopacket.LayerType { return LayerTypeDot11Data }
func (m *Dot11Data) CanDecode() gopacket.LayerClass { return LayerTypeDot11Data }
func (m *Dot11Data) DecodeFromBytes(data []byte, df gopacket.DecodeFeedback) error {
m.Payload = data
return nil
}
func decodeDot11Data(data []byte, p gopacket.PacketBuilder) error {
d := &Dot11Data{}
return decodingLayerDecoder(d, data, p)
}
type Dot11DataCFAck struct {
Dot11Data
}
func decodeDot11DataCFAck(data []byte, p gopacket.PacketBuilder) error {
d := &Dot11DataCFAck{}
return decodingLayerDecoder(d, data, p)
}
func (m *Dot11DataCFAck) LayerType() gopacket.LayerType { return LayerTypeDot11DataCFAck }
func (m *Dot11DataCFAck) CanDecode() gopacket.LayerClass { return LayerTypeDot11DataCFAck }
func (m *Dot11DataCFAck) DecodeFromBytes(data []byte, df gopacket.DecodeFeedback) error {
return m.Dot11Data.DecodeFromBytes(data, df)
}
type Dot11DataCFPoll struct {
Dot11Data
}
func decodeDot11DataCFPoll(data []byte, p gopacket.PacketBuilder) error {
d := &Dot11DataCFPoll{}
return decodingLayerDecoder(d, data, p)
}
func (m *Dot11DataCFPoll) LayerType() gopacket.LayerType { return LayerTypeDot11DataCFPoll }
func (m *Dot11DataCFPoll) CanDecode() gopacket.LayerClass { return LayerTypeDot11DataCFPoll }
func (m *Dot11DataCFPoll) DecodeFromBytes(data []byte, df gopacket.DecodeFeedback) error {
return m.Dot11Data.DecodeFromBytes(data, df)
}
type Dot11DataCFAckPoll struct {
Dot11Data
}
func decodeDot11DataCFAckPoll(data []byte, p gopacket.PacketBuilder) error {
d := &Dot11DataCFAckPoll{}
return decodingLayerDecoder(d, data, p)
}
func (m *Dot11DataCFAckPoll) LayerType() gopacket.LayerType { return LayerTypeDot11DataCFAckPoll }
func (m *Dot11DataCFAckPoll) CanDecode() gopacket.LayerClass { return LayerTypeDot11DataCFAckPoll }
func (m *Dot11DataCFAckPoll) DecodeFromBytes(data []byte, df gopacket.DecodeFeedback) error {
return m.Dot11Data.DecodeFromBytes(data, df)
}
type Dot11DataNull struct {
Dot11Data
}
func decodeDot11DataNull(data []byte, p gopacket.PacketBuilder) error {
d := &Dot11DataNull{}
return decodingLayerDecoder(d, data, p)
}
func (m *Dot11DataNull) LayerType() gopacket.LayerType { return LayerTypeDot11DataNull }
func (m *Dot11DataNull) CanDecode() gopacket.LayerClass { return LayerTypeDot11DataNull }
func (m *Dot11DataNull) DecodeFromBytes(data []byte, df gopacket.DecodeFeedback) error {
return m.Dot11Data.DecodeFromBytes(data, df)
}
type Dot11DataCFAckNoData struct {
Dot11Data
}
func decodeDot11DataCFAckNoData(data []byte, p gopacket.PacketBuilder) error {
d := &Dot11DataCFAckNoData{}
return decodingLayerDecoder(d, data, p)
}
func (m *Dot11DataCFAckNoData) LayerType() gopacket.LayerType { return LayerTypeDot11DataCFAckNoData }
func (m *Dot11DataCFAckNoData) CanDecode() gopacket.LayerClass { return LayerTypeDot11DataCFAckNoData }
func (m *Dot11DataCFAckNoData) DecodeFromBytes(data []byte, df gopacket.DecodeFeedback) error {
return m.Dot11Data.DecodeFromBytes(data, df)
}
type Dot11DataCFPollNoData struct {
Dot11Data
}
func decodeDot11DataCFPollNoData(data []byte, p gopacket.PacketBuilder) error {
d := &Dot11DataCFPollNoData{}
return decodingLayerDecoder(d, data, p)
}
func (m *Dot11DataCFPollNoData) LayerType() gopacket.LayerType { return LayerTypeDot11DataCFPollNoData }
func (m *Dot11DataCFPollNoData) CanDecode() gopacket.LayerClass { return LayerTypeDot11DataCFPollNoData }
func (m *Dot11DataCFPollNoData) DecodeFromBytes(data []byte, df gopacket.DecodeFeedback) error {
return m.Dot11Data.DecodeFromBytes(data, df)
}
type Dot11DataCFAckPollNoData struct {
Dot11Data
}
func decodeDot11DataCFAckPollNoData(data []byte, p gopacket.PacketBuilder) error {
d := &Dot11DataCFAckPollNoData{}
return decodingLayerDecoder(d, data, p)
}
func (m *Dot11DataCFAckPollNoData) LayerType() gopacket.LayerType {
return LayerTypeDot11DataCFAckPollNoData
}
func (m *Dot11DataCFAckPollNoData) CanDecode() gopacket.LayerClass {
return LayerTypeDot11DataCFAckPollNoData
}
func (m *Dot11DataCFAckPollNoData) DecodeFromBytes(data []byte, df gopacket.DecodeFeedback) error {
return m.Dot11Data.DecodeFromBytes(data, df)
}
type Dot11DataQOS struct {
Dot11Ctrl
TID uint8 /* Traffic IDentifier */
EOSP bool /* End of service period */
AckPolicy Dot11AckPolicy
TXOP uint8
}
func (m *Dot11DataQOS) DecodeFromBytes(data []byte, df gopacket.DecodeFeedback) error {
m.TID = (uint8(data[0]) & 0x0F)
m.EOSP = (uint8(data[0]) & 0x10) == 0x10
m.AckPolicy = Dot11AckPolicy((uint8(data[0]) & 0x60) >> 5)
m.TXOP = uint8(data[1])
// TODO: Mesh Control bytes 2:4
m.BaseLayer = BaseLayer{Contents: data[0:4], Payload: data[4:]}
return nil
}
type Dot11DataQOSData struct {
Dot11DataQOS
}
func decodeDot11DataQOSData(data []byte, p gopacket.PacketBuilder) error {
d := &Dot11DataQOSData{}
return decodingLayerDecoder(d, data, p)
}
func (m *Dot11DataQOSData) LayerType() gopacket.LayerType { return LayerTypeDot11DataQOSData }
func (m *Dot11DataQOSData) CanDecode() gopacket.LayerClass { return LayerTypeDot11DataQOSData }
func (m *Dot11DataQOSData) NextLayerType() gopacket.LayerType {
return LayerTypeDot11Data
}
type Dot11DataQOSDataCFAck struct {
Dot11DataQOS
}
func decodeDot11DataQOSDataCFAck(data []byte, p gopacket.PacketBuilder) error {
d := &Dot11DataQOSDataCFAck{}
return decodingLayerDecoder(d, data, p)
}
func (m *Dot11DataQOSDataCFAck) LayerType() gopacket.LayerType { return LayerTypeDot11DataQOSDataCFAck }
func (m *Dot11DataQOSDataCFAck) CanDecode() gopacket.LayerClass { return LayerTypeDot11DataQOSDataCFAck }
func (m *Dot11DataQOSDataCFAck) NextLayerType() gopacket.LayerType { return LayerTypeDot11DataCFAck }
type Dot11DataQOSDataCFPoll struct {
Dot11DataQOS
}
func decodeDot11DataQOSDataCFPoll(data []byte, p gopacket.PacketBuilder) error {
d := &Dot11DataQOSDataCFPoll{}
return decodingLayerDecoder(d, data, p)
}
func (m *Dot11DataQOSDataCFPoll) LayerType() gopacket.LayerType {
return LayerTypeDot11DataQOSDataCFPoll
}
func (m *Dot11DataQOSDataCFPoll) CanDecode() gopacket.LayerClass {
return LayerTypeDot11DataQOSDataCFPoll
}
func (m *Dot11DataQOSDataCFPoll) NextLayerType() gopacket.LayerType { return LayerTypeDot11DataCFPoll }
type Dot11DataQOSDataCFAckPoll struct {
Dot11DataQOS
}
func decodeDot11DataQOSDataCFAckPoll(data []byte, p gopacket.PacketBuilder) error {
d := &Dot11DataQOSDataCFAckPoll{}
return decodingLayerDecoder(d, data, p)
}
func (m *Dot11DataQOSDataCFAckPoll) LayerType() gopacket.LayerType {
return LayerTypeDot11DataQOSDataCFAckPoll
}
func (m *Dot11DataQOSDataCFAckPoll) CanDecode() gopacket.LayerClass {
return LayerTypeDot11DataQOSDataCFAckPoll
}
func (m *Dot11DataQOSDataCFAckPoll) NextLayerType() gopacket.LayerType {
return LayerTypeDot11DataCFAckPoll
}
type Dot11DataQOSNull struct {
Dot11DataQOS
}
func decodeDot11DataQOSNull(data []byte, p gopacket.PacketBuilder) error {
d := &Dot11DataQOSNull{}
return decodingLayerDecoder(d, data, p)
}
func (m *Dot11DataQOSNull) LayerType() gopacket.LayerType { return LayerTypeDot11DataQOSNull }
func (m *Dot11DataQOSNull) CanDecode() gopacket.LayerClass { return LayerTypeDot11DataQOSNull }
func (m *Dot11DataQOSNull) NextLayerType() gopacket.LayerType { return LayerTypeDot11DataNull }
type Dot11DataQOSCFPollNoData struct {
Dot11DataQOS
}
func decodeDot11DataQOSCFPollNoData(data []byte, p gopacket.PacketBuilder) error {
d := &Dot11DataQOSCFPollNoData{}
return decodingLayerDecoder(d, data, p)
}
func (m *Dot11DataQOSCFPollNoData) LayerType() gopacket.LayerType {
return LayerTypeDot11DataQOSCFPollNoData
}
func (m *Dot11DataQOSCFPollNoData) CanDecode() gopacket.LayerClass {
return LayerTypeDot11DataQOSCFPollNoData
}
func (m *Dot11DataQOSCFPollNoData) NextLayerType() gopacket.LayerType {
return LayerTypeDot11DataCFPollNoData
}
type Dot11DataQOSCFAckPollNoData struct {
Dot11DataQOS
}
func decodeDot11DataQOSCFAckPollNoData(data []byte, p gopacket.PacketBuilder) error {
d := &Dot11DataQOSCFAckPollNoData{}
return decodingLayerDecoder(d, data, p)
}
func (m *Dot11DataQOSCFAckPollNoData) LayerType() gopacket.LayerType {
return LayerTypeDot11DataQOSCFAckPollNoData
}
func (m *Dot11DataQOSCFAckPollNoData) CanDecode() gopacket.LayerClass {
return LayerTypeDot11DataQOSCFAckPollNoData
}
func (m *Dot11DataQOSCFAckPollNoData) NextLayerType() gopacket.LayerType {
return LayerTypeDot11DataCFAckPollNoData
}
type Dot11InformationElement struct {
BaseLayer
ID Dot11InformationElementID
Length uint8
OUI []byte
Info []byte
}
func (m *Dot11InformationElement) LayerType() gopacket.LayerType {
return LayerTypeDot11InformationElement
}
func (m *Dot11InformationElement) CanDecode() gopacket.LayerClass {
return LayerTypeDot11InformationElement
}
func (m *Dot11InformationElement) NextLayerType() gopacket.LayerType {
return LayerTypeDot11InformationElement
}
func (m *Dot11InformationElement) DecodeFromBytes(data []byte, df gopacket.DecodeFeedback) error {
m.ID = Dot11InformationElementID(data[0])
m.Length = data[1]
offset := uint8(2)
if m.ID == 221 {
// Vendor extension
m.OUI = data[offset : offset+4]
m.Info = data[offset+4 : offset+m.Length]
} else {
m.Info = data[offset : offset+m.Length]
}
offset += m.Length
m.BaseLayer = BaseLayer{Contents: data[:offset], Payload: data[offset:]}
return nil
}
func (d *Dot11InformationElement) String() string {
if d.ID == 0 {
return fmt.Sprintf("802.11 Information Element (SSID: %v)", string(d.Info))
} else if d.ID == 1 {
rates := ""
for i := 0; i < len(d.Info); i++ {
if d.Info[i]&0x80 == 0 {
rates += fmt.Sprintf("%.1f ", float32(d.Info[i])*0.5)
} else {
rates += fmt.Sprintf("%.1f* ", float32(d.Info[i]&0x7F)*0.5)
}
}
return fmt.Sprintf("802.11 Information Element (Rates: %s Mbit)", rates)
} else if d.ID == 221 {
return fmt.Sprintf("802.11 Information Element (Vendor: ID: %v, Length: %v, OUI: %X, Info: %X)", d.ID, d.Length, d.OUI, d.Info)
} else {
return fmt.Sprintf("802.11 Information Element (ID: %v, Length: %v, Info: %X)", d.ID, d.Length, d.Info)
}
}
func decodeDot11InformationElement(data []byte, p gopacket.PacketBuilder) error {
d := &Dot11InformationElement{}
return decodingLayerDecoder(d, data, p)
}
type Dot11CtrlCTS struct {
Dot11Ctrl
}
func decodeDot11CtrlCTS(data []byte, p gopacket.PacketBuilder) error {
d := &Dot11CtrlCTS{}
return decodingLayerDecoder(d, data, p)
}
func (m *Dot11CtrlCTS) LayerType() gopacket.LayerType {
return LayerTypeDot11CtrlCTS
}
func (m *Dot11CtrlCTS) CanDecode() gopacket.LayerClass {
return LayerTypeDot11CtrlCTS
}
func (m *Dot11CtrlCTS) DecodeFromBytes(data []byte, df gopacket.DecodeFeedback) error {
return m.Dot11Ctrl.DecodeFromBytes(data, df)
}
type Dot11CtrlRTS struct {
Dot11Ctrl
}
func decodeDot11CtrlRTS(data []byte, p gopacket.PacketBuilder) error {
d := &Dot11CtrlRTS{}
return decodingLayerDecoder(d, data, p)
}
func (m *Dot11CtrlRTS) LayerType() gopacket.LayerType {
return LayerTypeDot11CtrlRTS
}
func (m *Dot11CtrlRTS) CanDecode() gopacket.LayerClass {
return LayerTypeDot11CtrlRTS
}
func (m *Dot11CtrlRTS) DecodeFromBytes(data []byte, df gopacket.DecodeFeedback) error {
return m.Dot11Ctrl.DecodeFromBytes(data, df)
}
type Dot11CtrlBlockAckReq struct {
Dot11Ctrl
}
func decodeDot11CtrlBlockAckReq(data []byte, p gopacket.PacketBuilder) error {
d := &Dot11CtrlBlockAckReq{}
return decodingLayerDecoder(d, data, p)
}
func (m *Dot11CtrlBlockAckReq) LayerType() gopacket.LayerType {
return LayerTypeDot11CtrlBlockAckReq
}
func (m *Dot11CtrlBlockAckReq) CanDecode() gopacket.LayerClass {
return LayerTypeDot11CtrlBlockAckReq
}
func (m *Dot11CtrlBlockAckReq) DecodeFromBytes(data []byte, df gopacket.DecodeFeedback) error {
return m.Dot11Ctrl.DecodeFromBytes(data, df)
}
type Dot11CtrlBlockAck struct {
Dot11Ctrl
}
func decodeDot11CtrlBlockAck(data []byte, p gopacket.PacketBuilder) error {
d := &Dot11CtrlBlockAck{}
return decodingLayerDecoder(d, data, p)
}
func (m *Dot11CtrlBlockAck) LayerType() gopacket.LayerType { return LayerTypeDot11CtrlBlockAck }
func (m *Dot11CtrlBlockAck) CanDecode() gopacket.LayerClass { return LayerTypeDot11CtrlBlockAck }
func (m *Dot11CtrlBlockAck) DecodeFromBytes(data []byte, df gopacket.DecodeFeedback) error {
return m.Dot11Ctrl.DecodeFromBytes(data, df)
}
type Dot11CtrlPowersavePoll struct {
Dot11Ctrl
}
func decodeDot11CtrlPowersavePoll(data []byte, p gopacket.PacketBuilder) error {
d := &Dot11CtrlPowersavePoll{}
return decodingLayerDecoder(d, data, p)
}
func (m *Dot11CtrlPowersavePoll) LayerType() gopacket.LayerType {
return LayerTypeDot11CtrlPowersavePoll
}
func (m *Dot11CtrlPowersavePoll) CanDecode() gopacket.LayerClass {
return LayerTypeDot11CtrlPowersavePoll
}
func (m *Dot11CtrlPowersavePoll) DecodeFromBytes(data []byte, df gopacket.DecodeFeedback) error {
return m.Dot11Ctrl.DecodeFromBytes(data, df)
}
type Dot11CtrlAck struct {
Dot11Ctrl
}
func decodeDot11CtrlAck(data []byte, p gopacket.PacketBuilder) error {
d := &Dot11CtrlAck{}
return decodingLayerDecoder(d, data, p)
}
func (m *Dot11CtrlAck) LayerType() gopacket.LayerType { return LayerTypeDot11CtrlAck }
func (m *Dot11CtrlAck) CanDecode() gopacket.LayerClass { return LayerTypeDot11CtrlAck }
func (m *Dot11CtrlAck) DecodeFromBytes(data []byte, df gopacket.DecodeFeedback) error {
return m.Dot11Ctrl.DecodeFromBytes(data, df)
}
type Dot11CtrlCFEnd struct {
Dot11Ctrl
}
func decodeDot11CtrlCFEnd(data []byte, p gopacket.PacketBuilder) error {
d := &Dot11CtrlCFEnd{}
return decodingLayerDecoder(d, data, p)
}
func (m *Dot11CtrlCFEnd) LayerType() gopacket.LayerType {
return LayerTypeDot11CtrlCFEnd
}
func (m *Dot11CtrlCFEnd) CanDecode() gopacket.LayerClass {
return LayerTypeDot11CtrlCFEnd
}
func (m *Dot11CtrlCFEnd) DecodeFromBytes(data []byte, df gopacket.DecodeFeedback) error {
return m.Dot11Ctrl.DecodeFromBytes(data, df)
}
type Dot11CtrlCFEndAck struct {
Dot11Ctrl
}
func decodeDot11CtrlCFEndAck(data []byte, p gopacket.PacketBuilder) error {
d := &Dot11CtrlCFEndAck{}
return decodingLayerDecoder(d, data, p)
}
func (m *Dot11CtrlCFEndAck) LayerType() gopacket.LayerType {
return LayerTypeDot11CtrlCFEndAck
}
func (m *Dot11CtrlCFEndAck) CanDecode() gopacket.LayerClass {
return LayerTypeDot11CtrlCFEndAck
}
func (m *Dot11CtrlCFEndAck) DecodeFromBytes(data []byte, df gopacket.DecodeFeedback) error {
return m.Dot11Ctrl.DecodeFromBytes(data, df)
}
type Dot11MgmtAssociationReq struct {
Dot11Mgmt
CapabilityInfo uint16
ListenInterval uint16
}
func decodeDot11MgmtAssociationReq(data []byte, p gopacket.PacketBuilder) error {
d := &Dot11MgmtAssociationReq{}
return decodingLayerDecoder(d, data, p)
}
func (m *Dot11MgmtAssociationReq) LayerType() gopacket.LayerType {
return LayerTypeDot11MgmtAssociationReq
}
func (m *Dot11MgmtAssociationReq) CanDecode() gopacket.LayerClass {
return LayerTypeDot11MgmtAssociationReq
}
func (m *Dot11MgmtAssociationReq) NextLayerType() gopacket.LayerType {
return LayerTypeDot11InformationElement
}
func (m *Dot11MgmtAssociationReq) DecodeFromBytes(data []byte, df gopacket.DecodeFeedback) error {
m.CapabilityInfo = binary.LittleEndian.Uint16(data[0:2])
m.ListenInterval = binary.LittleEndian.Uint16(data[2:4])
return m.Dot11Mgmt.DecodeFromBytes(data, df)
}
type Dot11MgmtAssociationResp struct {
Dot11Mgmt
CapabilityInfo uint16
Status Dot11Status
AID uint16
}
func decodeDot11MgmtAssociationResp(data []byte, p gopacket.PacketBuilder) error {
d := &Dot11MgmtAssociationResp{}
return decodingLayerDecoder(d, data, p)
}
func (m *Dot11MgmtAssociationResp) CanDecode() gopacket.LayerClass {
return LayerTypeDot11MgmtAssociationResp
}
func (m *Dot11MgmtAssociationResp) LayerType() gopacket.LayerType {
return LayerTypeDot11MgmtAssociationResp
}
func (m *Dot11MgmtAssociationResp) NextLayerType() gopacket.LayerType {
return LayerTypeDot11InformationElement
}
func (m *Dot11MgmtAssociationResp) DecodeFromBytes(data []byte, df gopacket.DecodeFeedback) error {
m.CapabilityInfo = binary.LittleEndian.Uint16(data[0:2])
m.Status = Dot11Status(binary.LittleEndian.Uint16(data[2:4]))
m.AID = binary.LittleEndian.Uint16(data[4:6])
return m.Dot11Mgmt.DecodeFromBytes(data, df)
}
type Dot11MgmtReassociationReq struct {
Dot11Mgmt
CapabilityInfo uint16
ListenInterval uint16
CurrentApAddress net.HardwareAddr
}
func decodeDot11MgmtReassociationReq(data []byte, p gopacket.PacketBuilder) error {
d := &Dot11MgmtReassociationReq{}
return decodingLayerDecoder(d, data, p)
}
func (m *Dot11MgmtReassociationReq) LayerType() gopacket.LayerType {
return LayerTypeDot11MgmtReassociationReq
}
func (m *Dot11MgmtReassociationReq) CanDecode() gopacket.LayerClass {
return LayerTypeDot11MgmtReassociationReq
}
func (m *Dot11MgmtReassociationReq) NextLayerType() gopacket.LayerType {
return LayerTypeDot11InformationElement
}
func (m *Dot11MgmtReassociationReq) DecodeFromBytes(data []byte, df gopacket.DecodeFeedback) error {
m.CapabilityInfo = binary.LittleEndian.Uint16(data[0:2])
m.ListenInterval = binary.LittleEndian.Uint16(data[2:4])
m.CurrentApAddress = net.HardwareAddr(data[4:10])
return m.Dot11Mgmt.DecodeFromBytes(data, df)
}
type Dot11MgmtReassociationResp struct {
Dot11Mgmt
}
func decodeDot11MgmtReassociationResp(data []byte, p gopacket.PacketBuilder) error {
d := &Dot11MgmtReassociationResp{}
return decodingLayerDecoder(d, data, p)
}
func (m *Dot11MgmtReassociationResp) LayerType() gopacket.LayerType {
return LayerTypeDot11MgmtReassociationResp
}
func (m *Dot11MgmtReassociationResp) CanDecode() gopacket.LayerClass {