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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"
"hash/crc32"
"net"
"github.com/google/gopacket"
)
// 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
const (
Dot11InformationElementIDSSID Dot11InformationElementID = 0
Dot11InformationElementIDRates Dot11InformationElementID = 1
Dot11InformationElementIDFHSet Dot11InformationElementID = 2
Dot11InformationElementIDDSSet Dot11InformationElementID = 3
Dot11InformationElementIDCFSet Dot11InformationElementID = 4
Dot11InformationElementIDTIM Dot11InformationElementID = 5
Dot11InformationElementIDIBSSSet Dot11InformationElementID = 6
Dot11InformationElementIDCountryInfo Dot11InformationElementID = 7
Dot11InformationElementIDHoppingPatternParam Dot11InformationElementID = 8
Dot11InformationElementIDHoppingPatternTable Dot11InformationElementID = 9
Dot11InformationElementIDRequest Dot11InformationElementID = 10
Dot11InformationElementIDQBSSLoadElem Dot11InformationElementID = 11
Dot11InformationElementIDEDCAParamSet Dot11InformationElementID = 12
Dot11InformationElementIDTrafficSpec Dot11InformationElementID = 13
Dot11InformationElementIDTrafficClass Dot11InformationElementID = 14
Dot11InformationElementIDSchedule Dot11InformationElementID = 15
Dot11InformationElementIDChallenge Dot11InformationElementID = 16
Dot11InformationElementIDPowerConst Dot11InformationElementID = 32
Dot11InformationElementIDPowerCapability Dot11InformationElementID = 33
Dot11InformationElementIDTPCRequest Dot11InformationElementID = 34
Dot11InformationElementIDTPCReport Dot11InformationElementID = 35
Dot11InformationElementIDSupportedChannels Dot11InformationElementID = 36
Dot11InformationElementIDSwitchChannelAnnounce Dot11InformationElementID = 37
Dot11InformationElementIDMeasureRequest Dot11InformationElementID = 38
Dot11InformationElementIDMeasureReport Dot11InformationElementID = 39
Dot11InformationElementIDQuiet Dot11InformationElementID = 40
Dot11InformationElementIDIBSSDFS Dot11InformationElementID = 41
Dot11InformationElementIDERPInfo Dot11InformationElementID = 42
Dot11InformationElementIDTSDelay Dot11InformationElementID = 43
Dot11InformationElementIDTCLASProcessing Dot11InformationElementID = 44
Dot11InformationElementIDHTCapabilities Dot11InformationElementID = 45
Dot11InformationElementIDQOSCapability Dot11InformationElementID = 46
Dot11InformationElementIDERPInfo2 Dot11InformationElementID = 47
Dot11InformationElementIDRSNInfo Dot11InformationElementID = 48
Dot11InformationElementIDESRates Dot11InformationElementID = 50
Dot11InformationElementIDAPChannelReport Dot11InformationElementID = 51
Dot11InformationElementIDNeighborReport Dot11InformationElementID = 52
Dot11InformationElementIDRCPI Dot11InformationElementID = 53
Dot11InformationElementIDMobilityDomain Dot11InformationElementID = 54
Dot11InformationElementIDFastBSSTrans Dot11InformationElementID = 55
Dot11InformationElementIDTimeoutInt Dot11InformationElementID = 56
Dot11InformationElementIDRICData Dot11InformationElementID = 57
Dot11InformationElementIDDSERegisteredLoc Dot11InformationElementID = 58
Dot11InformationElementIDSuppOperatingClass Dot11InformationElementID = 59
Dot11InformationElementIDExtChanSwitchAnnounce Dot11InformationElementID = 60
Dot11InformationElementIDHTInfo Dot11InformationElementID = 61
Dot11InformationElementIDSecChanOffset Dot11InformationElementID = 62
Dot11InformationElementIDBSSAverageAccessDelay Dot11InformationElementID = 63
Dot11InformationElementIDAntenna Dot11InformationElementID = 64
Dot11InformationElementIDRSNI Dot11InformationElementID = 65
Dot11InformationElementIDMeasurePilotTrans Dot11InformationElementID = 66
Dot11InformationElementIDBSSAvailAdmCapacity Dot11InformationElementID = 67
Dot11InformationElementIDBSSACAccDelayWAPIParam Dot11InformationElementID = 68
Dot11InformationElementIDTimeAdvertisement Dot11InformationElementID = 69
Dot11InformationElementIDRMEnabledCapabilities Dot11InformationElementID = 70
Dot11InformationElementIDMultipleBSSID Dot11InformationElementID = 71
Dot11InformationElementID2040BSSCoExist Dot11InformationElementID = 72
Dot11InformationElementID2040BSSIntChanReport Dot11InformationElementID = 73
Dot11InformationElementIDOverlapBSSScanParam Dot11InformationElementID = 74
Dot11InformationElementIDRICDescriptor Dot11InformationElementID = 75
Dot11InformationElementIDManagementMIC Dot11InformationElementID = 76
Dot11InformationElementIDEventRequest Dot11InformationElementID = 78
Dot11InformationElementIDEventReport Dot11InformationElementID = 79
Dot11InformationElementIDDiagnosticRequest Dot11InformationElementID = 80
Dot11InformationElementIDDiagnosticReport Dot11InformationElementID = 81
Dot11InformationElementIDLocationParam Dot11InformationElementID = 82
Dot11InformationElementIDNonTransBSSIDCapability Dot11InformationElementID = 83
Dot11InformationElementIDSSIDList Dot11InformationElementID = 84
Dot11InformationElementIDMultipleBSSIDIndex Dot11InformationElementID = 85
Dot11InformationElementIDFMSDescriptor Dot11InformationElementID = 86
Dot11InformationElementIDFMSRequest Dot11InformationElementID = 87
Dot11InformationElementIDFMSResponse Dot11InformationElementID = 88
Dot11InformationElementIDQOSTrafficCapability Dot11InformationElementID = 89
Dot11InformationElementIDBSSMaxIdlePeriod Dot11InformationElementID = 90
Dot11InformationElementIDTFSRequest Dot11InformationElementID = 91
Dot11InformationElementIDTFSResponse Dot11InformationElementID = 92
Dot11InformationElementIDWNMSleepMode Dot11InformationElementID = 93
Dot11InformationElementIDTIMBroadcastRequest Dot11InformationElementID = 94
Dot11InformationElementIDTIMBroadcastResponse Dot11InformationElementID = 95
Dot11InformationElementIDCollInterferenceReport Dot11InformationElementID = 96
Dot11InformationElementIDChannelUsage Dot11InformationElementID = 97
Dot11InformationElementIDTimeZone Dot11InformationElementID = 98
Dot11InformationElementIDDMSRequest Dot11InformationElementID = 99
Dot11InformationElementIDDMSResponse Dot11InformationElementID = 100
Dot11InformationElementIDLinkIdentifier Dot11InformationElementID = 101
Dot11InformationElementIDWakeupSchedule Dot11InformationElementID = 102
Dot11InformationElementIDChannelSwitchTiming Dot11InformationElementID = 104
Dot11InformationElementIDPTIControl Dot11InformationElementID = 105
Dot11InformationElementIDPUBufferStatus Dot11InformationElementID = 106
Dot11InformationElementIDInterworking Dot11InformationElementID = 107
Dot11InformationElementIDAdvertisementProtocol Dot11InformationElementID = 108
Dot11InformationElementIDExpBWRequest Dot11InformationElementID = 109
Dot11InformationElementIDQOSMapSet Dot11InformationElementID = 110
Dot11InformationElementIDRoamingConsortium Dot11InformationElementID = 111
Dot11InformationElementIDEmergencyAlertIdentifier Dot11InformationElementID = 112
Dot11InformationElementIDMeshConfiguration Dot11InformationElementID = 113
Dot11InformationElementIDMeshID Dot11InformationElementID = 114
Dot11InformationElementIDMeshLinkMetricReport Dot11InformationElementID = 115
Dot11InformationElementIDCongestionNotification Dot11InformationElementID = 116
Dot11InformationElementIDMeshPeeringManagement Dot11InformationElementID = 117
Dot11InformationElementIDMeshChannelSwitchParam Dot11InformationElementID = 118
Dot11InformationElementIDMeshAwakeWindows Dot11InformationElementID = 119
Dot11InformationElementIDBeaconTiming Dot11InformationElementID = 120
Dot11InformationElementIDMCCAOPSetupRequest Dot11InformationElementID = 121
Dot11InformationElementIDMCCAOPSetupReply Dot11InformationElementID = 122
Dot11InformationElementIDMCCAOPAdvertisement Dot11InformationElementID = 123
Dot11InformationElementIDMCCAOPTeardown Dot11InformationElementID = 124
Dot11InformationElementIDGateAnnouncement Dot11InformationElementID = 125
Dot11InformationElementIDRootAnnouncement Dot11InformationElementID = 126
Dot11InformationElementIDExtCapability Dot11InformationElementID = 127
Dot11InformationElementIDAgereProprietary Dot11InformationElementID = 128
Dot11InformationElementIDPathRequest Dot11InformationElementID = 130
Dot11InformationElementIDPathReply Dot11InformationElementID = 131
Dot11InformationElementIDPathError Dot11InformationElementID = 132
Dot11InformationElementIDCiscoCCX1CKIPDeviceName Dot11InformationElementID = 133
Dot11InformationElementIDCiscoCCX2 Dot11InformationElementID = 136
Dot11InformationElementIDProxyUpdate Dot11InformationElementID = 137
Dot11InformationElementIDProxyUpdateConfirmation Dot11InformationElementID = 138
Dot11InformationElementIDAuthMeshPerringExch Dot11InformationElementID = 139
Dot11InformationElementIDMIC Dot11InformationElementID = 140
Dot11InformationElementIDDestinationURI Dot11InformationElementID = 141
Dot11InformationElementIDUAPSDCoexistence Dot11InformationElementID = 142
Dot11InformationElementIDWakeupSchedule80211ad Dot11InformationElementID = 143
Dot11InformationElementIDExtendedSchedule Dot11InformationElementID = 144
Dot11InformationElementIDSTAAvailability Dot11InformationElementID = 145
Dot11InformationElementIDDMGTSPEC Dot11InformationElementID = 146
Dot11InformationElementIDNextDMGATI Dot11InformationElementID = 147
Dot11InformationElementIDDMSCapabilities Dot11InformationElementID = 148
Dot11InformationElementIDCiscoUnknown95 Dot11InformationElementID = 149
Dot11InformationElementIDVendor2 Dot11InformationElementID = 150
Dot11InformationElementIDDMGOperating Dot11InformationElementID = 151
Dot11InformationElementIDDMGBSSParamChange Dot11InformationElementID = 152
Dot11InformationElementIDDMGBeamRefinement Dot11InformationElementID = 153
Dot11InformationElementIDChannelMeasFeedback Dot11InformationElementID = 154
Dot11InformationElementIDAwakeWindow Dot11InformationElementID = 157
Dot11InformationElementIDMultiBand Dot11InformationElementID = 158
Dot11InformationElementIDADDBAExtension Dot11InformationElementID = 159
Dot11InformationElementIDNEXTPCPList Dot11InformationElementID = 160
Dot11InformationElementIDPCPHandover Dot11InformationElementID = 161
Dot11InformationElementIDDMGLinkMargin Dot11InformationElementID = 162
Dot11InformationElementIDSwitchingStream Dot11InformationElementID = 163
Dot11InformationElementIDSessionTransmission Dot11InformationElementID = 164
Dot11InformationElementIDDynamicTonePairReport Dot11InformationElementID = 165
Dot11InformationElementIDClusterReport Dot11InformationElementID = 166
Dot11InformationElementIDRelayCapabilities Dot11InformationElementID = 167
Dot11InformationElementIDRelayTransferParameter Dot11InformationElementID = 168
Dot11InformationElementIDBeamlinkMaintenance Dot11InformationElementID = 169
Dot11InformationElementIDMultipleMacSublayers Dot11InformationElementID = 170
Dot11InformationElementIDUPID Dot11InformationElementID = 171
Dot11InformationElementIDDMGLinkAdaptionAck Dot11InformationElementID = 172
Dot11InformationElementIDSymbolProprietary Dot11InformationElementID = 173
Dot11InformationElementIDMCCAOPAdvertOverview Dot11InformationElementID = 174
Dot11InformationElementIDQuietPeriodRequest Dot11InformationElementID = 175
Dot11InformationElementIDQuietPeriodResponse Dot11InformationElementID = 177
Dot11InformationElementIDECPACPolicy Dot11InformationElementID = 182
Dot11InformationElementIDClusterTimeOffset Dot11InformationElementID = 183
Dot11InformationElementIDAntennaSectorID Dot11InformationElementID = 190
Dot11InformationElementIDVHTCapabilities Dot11InformationElementID = 191
Dot11InformationElementIDVHTOperation Dot11InformationElementID = 192
Dot11InformationElementIDExtendedBSSLoad Dot11InformationElementID = 193
Dot11InformationElementIDWideBWChannelSwitch Dot11InformationElementID = 194
Dot11InformationElementIDVHTTxPowerEnvelope Dot11InformationElementID = 195
Dot11InformationElementIDChannelSwitchWrapper Dot11InformationElementID = 196
Dot11InformationElementIDOperatingModeNotification Dot11InformationElementID = 199
Dot11InformationElementIDUPSIM Dot11InformationElementID = 200
Dot11InformationElementIDReducedNeighborReport Dot11InformationElementID = 201
Dot11InformationElementIDTVHTOperation Dot11InformationElementID = 202
Dot11InformationElementIDDeviceLocation Dot11InformationElementID = 204
Dot11InformationElementIDWhiteSpaceMap Dot11InformationElementID = 205
Dot11InformationElementIDFineTuningMeasureParams Dot11InformationElementID = 206
Dot11InformationElementIDVendor Dot11InformationElementID = 221
)
// 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 parameter set"
case Dot11InformationElementIDRates:
return "Supported Rates"
case Dot11InformationElementIDFHSet:
return "FH Parameter set"
case Dot11InformationElementIDDSSet:
return "DS Parameter set"
case Dot11InformationElementIDCFSet:
return "CF Parameter set"
case Dot11InformationElementIDTIM:
return "Traffic Indication Map (TIM)"
case Dot11InformationElementIDIBSSSet:
return "IBSS Parameter set"
case Dot11InformationElementIDCountryInfo:
return "Country Information"
case Dot11InformationElementIDHoppingPatternParam:
return "Hopping Pattern Parameters"
case Dot11InformationElementIDHoppingPatternTable:
return "Hopping Pattern Table"
case Dot11InformationElementIDRequest:
return "Request"
case Dot11InformationElementIDQBSSLoadElem:
return "QBSS Load Element"
case Dot11InformationElementIDEDCAParamSet:
return "EDCA Parameter Set"
case Dot11InformationElementIDTrafficSpec:
return "Traffic Specification"
case Dot11InformationElementIDTrafficClass:
return "Traffic Classification"
case Dot11InformationElementIDSchedule:
return "Schedule"
case Dot11InformationElementIDChallenge:
return "Challenge text"
case Dot11InformationElementIDPowerConst:
return "Power Constraint"
case Dot11InformationElementIDPowerCapability:
return "Power Capability"
case Dot11InformationElementIDTPCRequest:
return "TPC Request"
case Dot11InformationElementIDTPCReport:
return "TPC Report"
case Dot11InformationElementIDSupportedChannels:
return "Supported Channels"
case Dot11InformationElementIDSwitchChannelAnnounce:
return "Channel Switch Announcement"
case Dot11InformationElementIDMeasureRequest:
return "Measurement Request"
case Dot11InformationElementIDMeasureReport:
return "Measurement Report"
case Dot11InformationElementIDQuiet:
return "Quiet"
case Dot11InformationElementIDIBSSDFS:
return "IBSS DFS"
case Dot11InformationElementIDERPInfo:
return "ERP Information"
case Dot11InformationElementIDTSDelay:
return "TS Delay"
case Dot11InformationElementIDTCLASProcessing:
return "TCLAS Processing"
case Dot11InformationElementIDHTCapabilities:
return "HT Capabilities (802.11n D1.10)"
case Dot11InformationElementIDQOSCapability:
return "QOS Capability"
case Dot11InformationElementIDERPInfo2:
return "ERP Information-2"
case Dot11InformationElementIDRSNInfo:
return "RSN Information"
case Dot11InformationElementIDESRates:
return "Extended Supported Rates"
case Dot11InformationElementIDAPChannelReport:
return "AP Channel Report"
case Dot11InformationElementIDNeighborReport:
return "Neighbor Report"
case Dot11InformationElementIDRCPI:
return "RCPI"
case Dot11InformationElementIDMobilityDomain:
return "Mobility Domain"
case Dot11InformationElementIDFastBSSTrans:
return "Fast BSS Transition"
case Dot11InformationElementIDTimeoutInt:
return "Timeout Interval"
case Dot11InformationElementIDRICData:
return "RIC Data"
case Dot11InformationElementIDDSERegisteredLoc:
return "DSE Registered Location"
case Dot11InformationElementIDSuppOperatingClass:
return "Supported Operating Classes"
case Dot11InformationElementIDExtChanSwitchAnnounce:
return "Extended Channel Switch Announcement"
case Dot11InformationElementIDHTInfo:
return "HT Information (802.11n D1.10)"
case Dot11InformationElementIDSecChanOffset:
return "Secondary Channel Offset (802.11n D1.10)"
case Dot11InformationElementIDBSSAverageAccessDelay:
return "BSS Average Access Delay"
case Dot11InformationElementIDAntenna:
return "Antenna"
case Dot11InformationElementIDRSNI:
return "RSNI"
case Dot11InformationElementIDMeasurePilotTrans:
return "Measurement Pilot Transmission"
case Dot11InformationElementIDBSSAvailAdmCapacity:
return "BSS Available Admission Capacity"
case Dot11InformationElementIDBSSACAccDelayWAPIParam:
return "BSS AC Access Delay/WAPI Parameter Set"
case Dot11InformationElementIDTimeAdvertisement:
return "Time Advertisement"
case Dot11InformationElementIDRMEnabledCapabilities:
return "RM Enabled Capabilities"
case Dot11InformationElementIDMultipleBSSID:
return "Multiple BSSID"
case Dot11InformationElementID2040BSSCoExist:
return "20/40 BSS Coexistence"
case Dot11InformationElementID2040BSSIntChanReport:
return "20/40 BSS Intolerant Channel Report"
case Dot11InformationElementIDOverlapBSSScanParam:
return "Overlapping BSS Scan Parameters"
case Dot11InformationElementIDRICDescriptor:
return "RIC Descriptor"
case Dot11InformationElementIDManagementMIC:
return "Management MIC"
case Dot11InformationElementIDEventRequest:
return "Event Request"
case Dot11InformationElementIDEventReport:
return "Event Report"
case Dot11InformationElementIDDiagnosticRequest:
return "Diagnostic Request"
case Dot11InformationElementIDDiagnosticReport:
return "Diagnostic Report"
case Dot11InformationElementIDLocationParam:
return "Location Parameters"
case Dot11InformationElementIDNonTransBSSIDCapability:
return "Non Transmitted BSSID Capability"
case Dot11InformationElementIDSSIDList:
return "SSID List"
case Dot11InformationElementIDMultipleBSSIDIndex:
return "Multiple BSSID Index"
case Dot11InformationElementIDFMSDescriptor:
return "FMS Descriptor"
case Dot11InformationElementIDFMSRequest:
return "FMS Request"
case Dot11InformationElementIDFMSResponse:
return "FMS Response"
case Dot11InformationElementIDQOSTrafficCapability:
return "QoS Traffic Capability"
case Dot11InformationElementIDBSSMaxIdlePeriod:
return "BSS Max Idle Period"
case Dot11InformationElementIDTFSRequest:
return "TFS Request"
case Dot11InformationElementIDTFSResponse:
return "TFS Response"
case Dot11InformationElementIDWNMSleepMode:
return "WNM-Sleep Mode"
case Dot11InformationElementIDTIMBroadcastRequest:
return "TIM Broadcast Request"
case Dot11InformationElementIDTIMBroadcastResponse:
return "TIM Broadcast Response"
case Dot11InformationElementIDCollInterferenceReport:
return "Collocated Interference Report"
case Dot11InformationElementIDChannelUsage:
return "Channel Usage"
case Dot11InformationElementIDTimeZone:
return "Time Zone"
case Dot11InformationElementIDDMSRequest:
return "DMS Request"
case Dot11InformationElementIDDMSResponse:
return "DMS Response"
case Dot11InformationElementIDLinkIdentifier:
return "Link Identifier"
case Dot11InformationElementIDWakeupSchedule:
return "Wakeup Schedule"
case Dot11InformationElementIDChannelSwitchTiming:
return "Channel Switch Timing"
case Dot11InformationElementIDPTIControl:
return "PTI Control"
case Dot11InformationElementIDPUBufferStatus:
return "PU Buffer Status"
case Dot11InformationElementIDInterworking:
return "Interworking"
case Dot11InformationElementIDAdvertisementProtocol:
return "Advertisement Protocol"
case Dot11InformationElementIDExpBWRequest:
return "Expedited Bandwidth Request"
case Dot11InformationElementIDQOSMapSet:
return "QoS Map Set"
case Dot11InformationElementIDRoamingConsortium:
return "Roaming Consortium"
case Dot11InformationElementIDEmergencyAlertIdentifier:
return "Emergency Alert Identifier"
case Dot11InformationElementIDMeshConfiguration:
return "Mesh Configuration"
case Dot11InformationElementIDMeshID:
return "Mesh ID"
case Dot11InformationElementIDMeshLinkMetricReport:
return "Mesh Link Metric Report"
case Dot11InformationElementIDCongestionNotification:
return "Congestion Notification"
case Dot11InformationElementIDMeshPeeringManagement:
return "Mesh Peering Management"
case Dot11InformationElementIDMeshChannelSwitchParam:
return "Mesh Channel Switch Parameters"
case Dot11InformationElementIDMeshAwakeWindows:
return "Mesh Awake Windows"
case Dot11InformationElementIDBeaconTiming:
return "Beacon Timing"
case Dot11InformationElementIDMCCAOPSetupRequest:
return "MCCAOP Setup Request"
case Dot11InformationElementIDMCCAOPSetupReply:
return "MCCAOP SETUP Reply"
case Dot11InformationElementIDMCCAOPAdvertisement:
return "MCCAOP Advertisement"
case Dot11InformationElementIDMCCAOPTeardown:
return "MCCAOP Teardown"
case Dot11InformationElementIDGateAnnouncement:
return "Gate Announcement"
case Dot11InformationElementIDRootAnnouncement:
return "Root Announcement"
case Dot11InformationElementIDExtCapability:
return "Extended Capabilities"
case Dot11InformationElementIDAgereProprietary:
return "Agere Proprietary"
case Dot11InformationElementIDPathRequest:
return "Path Request"
case Dot11InformationElementIDPathReply:
return "Path Reply"
case Dot11InformationElementIDPathError:
return "Path Error"
case Dot11InformationElementIDCiscoCCX1CKIPDeviceName:
return "Cisco CCX1 CKIP + Device Name"
case Dot11InformationElementIDCiscoCCX2:
return "Cisco CCX2"
case Dot11InformationElementIDProxyUpdate:
return "Proxy Update"
case Dot11InformationElementIDProxyUpdateConfirmation:
return "Proxy Update Confirmation"
case Dot11InformationElementIDAuthMeshPerringExch:
return "Auhenticated Mesh Perring Exchange"
case Dot11InformationElementIDMIC:
return "MIC (Message Integrity Code)"
case Dot11InformationElementIDDestinationURI:
return "Destination URI"
case Dot11InformationElementIDUAPSDCoexistence:
return "U-APSD Coexistence"
case Dot11InformationElementIDWakeupSchedule80211ad:
return "Wakeup Schedule 802.11ad"
case Dot11InformationElementIDExtendedSchedule:
return "Extended Schedule"
case Dot11InformationElementIDSTAAvailability:
return "STA Availability"
case Dot11InformationElementIDDMGTSPEC:
return "DMG TSPEC"
case Dot11InformationElementIDNextDMGATI:
return "Next DMG ATI"
case Dot11InformationElementIDDMSCapabilities:
return "DMG Capabilities"
case Dot11InformationElementIDCiscoUnknown95:
return "Cisco Unknown 95"
case Dot11InformationElementIDVendor2:
return "Vendor Specific"
case Dot11InformationElementIDDMGOperating:
return "DMG Operating"
case Dot11InformationElementIDDMGBSSParamChange:
return "DMG BSS Parameter Change"
case Dot11InformationElementIDDMGBeamRefinement:
return "DMG Beam Refinement"
case Dot11InformationElementIDChannelMeasFeedback:
return "Channel Measurement Feedback"
case Dot11InformationElementIDAwakeWindow:
return "Awake Window"
case Dot11InformationElementIDMultiBand:
return "Multi Band"
case Dot11InformationElementIDADDBAExtension:
return "ADDBA Extension"
case Dot11InformationElementIDNEXTPCPList:
return "NEXTPCP List"
case Dot11InformationElementIDPCPHandover:
return "PCP Handover"
case Dot11InformationElementIDDMGLinkMargin:
return "DMG Link Margin"
case Dot11InformationElementIDSwitchingStream:
return "Switching Stream"
case Dot11InformationElementIDSessionTransmission:
return "Session Transmission"
case Dot11InformationElementIDDynamicTonePairReport:
return "Dynamic Tone Pairing Report"
case Dot11InformationElementIDClusterReport:
return "Cluster Report"
case Dot11InformationElementIDRelayCapabilities:
return "Relay Capabilities"
case Dot11InformationElementIDRelayTransferParameter:
return "Relay Transfer Parameter"
case Dot11InformationElementIDBeamlinkMaintenance:
return "Beamlink Maintenance"
case Dot11InformationElementIDMultipleMacSublayers:
return "Multiple MAC Sublayers"
case Dot11InformationElementIDUPID:
return "U-PID"
case Dot11InformationElementIDDMGLinkAdaptionAck:
return "DMG Link Adaption Acknowledgment"
case Dot11InformationElementIDSymbolProprietary:
return "Symbol Proprietary"
case Dot11InformationElementIDMCCAOPAdvertOverview:
return "MCCAOP Advertisement Overview"
case Dot11InformationElementIDQuietPeriodRequest:
return "Quiet Period Request"
case Dot11InformationElementIDQuietPeriodResponse:
return "Quiet Period Response"
case Dot11InformationElementIDECPACPolicy:
return "ECPAC Policy"
case Dot11InformationElementIDClusterTimeOffset:
return "Cluster Time Offset"
case Dot11InformationElementIDAntennaSectorID:
return "Antenna Sector ID"
case Dot11InformationElementIDVHTCapabilities:
return "VHT Capabilities (IEEE Std 802.11ac/D3.1)"
case Dot11InformationElementIDVHTOperation:
return "VHT Operation (IEEE Std 802.11ac/D3.1)"
case Dot11InformationElementIDExtendedBSSLoad:
return "Extended BSS Load"
case Dot11InformationElementIDWideBWChannelSwitch:
return "Wide Bandwidth Channel Switch"
case Dot11InformationElementIDVHTTxPowerEnvelope:
return "VHT Tx Power Envelope (IEEE Std 802.11ac/D5.0)"
case Dot11InformationElementIDChannelSwitchWrapper:
return "Channel Switch Wrapper"
case Dot11InformationElementIDOperatingModeNotification:
return "Operating Mode Notification"
case Dot11InformationElementIDUPSIM:
return "UP SIM"
case Dot11InformationElementIDReducedNeighborReport:
return "Reduced Neighbor Report"
case Dot11InformationElementIDTVHTOperation:
return "TVHT Op"
case Dot11InformationElementIDDeviceLocation:
return "Device Location"
case Dot11InformationElementIDWhiteSpaceMap:
return "White Space Map"
case Dot11InformationElementIDFineTuningMeasureParams:
return "Fine Tuning Measure Parameters"
case Dot11InformationElementIDVendor:
return "Vendor"
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 excruciating 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
QOS *Dot11QOS
HTControl *Dot11HTControl
DataLayer gopacket.Layer
}
type Dot11QOS struct {
TID uint8 /* Traffic IDentifier */
EOSP bool /* End of service period */
AckPolicy Dot11AckPolicy
TXOP uint8
}
type Dot11HTControl struct {
ACConstraint bool
RDGMorePPDU bool
VHT *Dot11HTControlVHT
HT *Dot11HTControlHT
}
type Dot11HTControlHT struct {
LinkAdapationControl *Dot11LinkAdapationControl
CalibrationPosition uint8
CalibrationSequence uint8
CSISteering uint8
NDPAnnouncement bool
DEI bool
}
type Dot11HTControlVHT struct {
MRQ bool
UnsolicitedMFB bool
MSI *uint8
MFB Dot11HTControlMFB
CompressedMSI *uint8
STBCIndication bool
MFSI *uint8
GID *uint8
CodingType *Dot11CodingType
FbTXBeamformed bool
}
type Dot11HTControlMFB struct {
NumSTS uint8
VHTMCS uint8
BW uint8
SNR int8
}
type Dot11LinkAdapationControl struct {
TRQ bool
MRQ bool
MSI uint8
MFSI uint8
ASEL *Dot11ASEL
MFB *uint8
}
type Dot11ASEL struct {
Command uint8
Data uint8
}
type Dot11CodingType uint8
const (
Dot11CodingTypeBCC = 0
Dot11CodingTypeLDPC = 1
)
func (a Dot11CodingType) String() string {
switch a {
case Dot11CodingTypeBCC:
return "BCC"
case Dot11CodingTypeLDPC:
return "LDPC"
default:
return "Unknown coding type"
}
}
func (m *Dot11HTControlMFB) NoFeedBackPresent() bool {
return m.VHTMCS == 15 && m.NumSTS == 7
}
func decodeDot11(data []byte, p gopacket.PacketBuilder) error {
d := &Dot11{}
err := d.DecodeFromBytes(data, p)
if err != nil {
return err
}
p.AddLayer(d)
if d.DataLayer != nil {
p.AddLayer(d.DataLayer)
}
return p.NextDecoder(d.NextLayerType())
}
func (m *Dot11) LayerType() gopacket.LayerType { return LayerTypeDot11 }
func (m *Dot11) CanDecode() gopacket.LayerClass { return LayerTypeDot11 }
func (m *Dot11) NextLayerType() gopacket.LayerType {
if m.DataLayer != nil {
if m.Flags.WEP() {
return LayerTypeDot11WEP
}
return m.DataLayer.(gopacket.DecodingLayer).NextLayerType()
}
return m.Type.LayerType()
}
func createU8(x uint8) *uint8 {
return &x
}
var dataDecodeMap = map[Dot11Type]func() gopacket.DecodingLayer{
Dot11TypeData: func() gopacket.DecodingLayer { return &Dot11Data{} },
Dot11TypeDataCFAck: func() gopacket.DecodingLayer { return &Dot11DataCFAck{} },
Dot11TypeDataCFPoll: func() gopacket.DecodingLayer { return &Dot11DataCFPoll{} },
Dot11TypeDataCFAckPoll: func() gopacket.DecodingLayer { return &Dot11DataCFAckPoll{} },
Dot11TypeDataNull: func() gopacket.DecodingLayer { return &Dot11DataNull{} },
Dot11TypeDataCFAckNoData: func() gopacket.DecodingLayer { return &Dot11DataCFAckNoData{} },
Dot11TypeDataCFPollNoData: func() gopacket.DecodingLayer { return &Dot11DataCFPollNoData{} },
Dot11TypeDataCFAckPollNoData: func() gopacket.DecodingLayer { return &Dot11DataCFAckPollNoData{} },
Dot11TypeDataQOSData: func() gopacket.DecodingLayer { return &Dot11DataQOSData{} },
Dot11TypeDataQOSDataCFAck: func() gopacket.DecodingLayer { return &Dot11DataQOSDataCFAck{} },
Dot11TypeDataQOSDataCFPoll: func() gopacket.DecodingLayer { return &Dot11DataQOSDataCFPoll{} },
Dot11TypeDataQOSDataCFAckPoll: func() gopacket.DecodingLayer { return &Dot11DataQOSDataCFAckPoll{} },
Dot11TypeDataQOSNull: func() gopacket.DecodingLayer { return &Dot11DataQOSNull{} },
Dot11TypeDataQOSCFPollNoData: func() gopacket.DecodingLayer { return &Dot11DataQOSCFPollNoData{} },
Dot11TypeDataQOSCFAckPollNoData: func() gopacket.DecodingLayer { return &Dot11DataQOSCFAckPollNoData{} },
}
func (m *Dot11) DecodeFromBytes(data []byte, df gopacket.DecodeFeedback) error {
if len(data) < 10 {
df.SetTruncated()
return fmt.Errorf("Dot11 length %v too short, %v required", len(data), 10)
}
m.Type = Dot11Type((data[0])&0xFC) >> 2
m.DataLayer = nil
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:
if len(data) < offset+6 {
df.SetTruncated()
return fmt.Errorf("Dot11 length %v too short, %v required", len(data), offset+6)
}
m.Address2 = net.HardwareAddr(data[offset : offset+6])
offset += 6
}
case Dot11TypeMgmt, Dot11TypeData:
if len(data) < offset+14 {
df.SetTruncated()
return fmt.Errorf("Dot11 length %v too short, %v required", len(data), offset+14)
}
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]) & 0xFFF0) >> 4
m.FragmentNumber = (binary.LittleEndian.Uint16(data[offset:offset+2]) & 0x000F)
offset += 2
}
if mainType == Dot11TypeData && m.Flags.FromDS() && m.Flags.ToDS() {
if len(data) < offset+6 {
df.SetTruncated()
return fmt.Errorf("Dot11 length %v too short, %v required", len(data), offset+6)
}
m.Address4 = net.HardwareAddr(data[offset : offset+6])
offset += 6
}
if m.Type.QOS() {
if len(data) < offset+2 {
df.SetTruncated()
return fmt.Errorf("Dot11 length %v too short, %v required", len(data), offset+6)
}
m.QOS = &Dot11QOS{
TID: (uint8(data[offset]) & 0x0F),
EOSP: (uint8(data[offset]) & 0x10) == 0x10,
AckPolicy: Dot11AckPolicy((uint8(data[offset]) & 0x60) >> 5),
TXOP: uint8(data[offset+1]),
}
offset += 2
}
if m.Flags.Order() && (m.Type.QOS() || mainType == Dot11TypeMgmt) {
if len(data) < offset+4 {
df.SetTruncated()
return fmt.Errorf("Dot11 length %v too short, %v required", len(data), offset+6)
}
htc := &Dot11HTControl{
ACConstraint: data[offset+3]&0x40 != 0,
RDGMorePPDU: data[offset+3]&0x80 != 0,
}
m.HTControl = htc
if data[offset]&0x1 != 0 { // VHT Variant
vht := &Dot11HTControlVHT{}
htc.VHT = vht
vht.MRQ = data[offset]&0x4 != 0
vht.UnsolicitedMFB = data[offset+3]&0x20 != 0
vht.MFB = Dot11HTControlMFB{