pcpp::WireGuardLayer Class Reference

#include <WireGuardLayer.h>

Inheritance diagram for pcpp::WireGuardLayer:

Classes
struct	wg_common_header

Public Types
enum class	WireGuardMessageType {   Unknown = 0 , HandshakeInitiation = 1 , HandshakeResponse = 2 , CookieReply = 3 ,   TransportData = 4 }
	WireGuard message types. More...

Public Member Functions
	WireGuardLayer (uint8_t *data, size_t dataLen, Layer *prevLayer, Packet *packet)
std::string	getMessageTypeAsString () const
uint8_t	getMessageType () const
uint32_t	getReserved () const
void	setReserved (const std::array< uint8_t, 3 > &reserved)
void	parseNextLayer () override
	Does nothing for this layer (WireGuard layer is always last)
size_t	getHeaderLen () const override
void	computeCalculateFields () override
	No fields to compute or update, so this method is left empty.
std::string	toString () const override
OsiModelLayer	getOsiModelLayer () const override
virtual WireGuardMessageType	getWireGuardMessageType () const
Public Member Functions inherited from pcpp::Layer
	~Layer () override
Layer *	getNextLayer () const
Layer *	getPrevLayer () const
ProtocolType	getProtocol () const
bool	isMemberOfProtocolFamily (ProtocolTypeFamily protocolTypeFamily) const
uint8_t *	getData () const
size_t	getDataLen () const
uint8_t *	getLayerPayload () const
size_t	getLayerPayloadSize () const
bool	isAllocatedToPacket () const
void	copyData (uint8_t *toArr) const
uint8_t *	getDataPtr (size_t offset=0) const override

Static Public Member Functions
static bool	isWireGuardPorts (uint16_t portSrc, uint16_t portDst)
static bool	isDataValid (const uint8_t *data, size_t dataLen)
static WireGuardLayer *	parseWireGuardLayer (uint8_t *data, size_t dataLen, Layer *prevLayer, Packet *packet)

Additional Inherited Members
Protected Member Functions inherited from pcpp::Layer
template<typename T , typename... Args>
Layer *	constructNextLayer (uint8_t *data, size_t dataLen, Packet *packet, Args &&... extraArgs)
template<typename T , typename TFallback , typename... Args>
Layer *	tryConstructNextLayerWithFallback (uint8_t *data, size_t dataLen, Packet *packet, Args &&... extraArgs)
Static Protected Member Functions inherited from pcpp::Layer
template<typename T >
static bool	canReinterpretAs (const uint8_t *data, size_t dataLen)
	Check if the data is large enough to reinterpret as a type. More...

Detailed Description

Represents a WireGuard protocol layer

Member Enumeration Documentation

WireGuardMessageType

enum pcpp::WireGuardLayer::WireGuardMessageType

strong

WireGuard message types.

Enumerator
Unknown	Unknown Initiation message.
HandshakeInitiation	Handshake Initiation message.
HandshakeResponse	Handshake Response message.
CookieReply	Cookie Reply message.
TransportData	Transport Data message.

Constructor & Destructor Documentation

WireGuardLayer()

pcpp::WireGuardLayer::WireGuardLayer ( uint8_t *  data, size_t  dataLen, Layer *  prevLayer, Packet *  packet  )

inline

Constructs a WireGuardLayer object.

Parameters

data	Pointer to the raw data representing the WireGuard layer
dataLen	Length of the data
prevLayer	Pointer to the previous layer in the packet (if any)
packet	Pointer to the packet this layer belongs to

Member Function Documentation

getHeaderLen()

size_t pcpp::WireGuardLayer::getHeaderLen ( ) const

overridevirtual

Returns

Size of the header in bytes.

Implements pcpp::Layer.

getMessageType()

uint8_t pcpp::WireGuardLayer::getMessageType

(

)

const

Returns

The message type as an unsigned 32-bit integer.

getMessageTypeAsString()

std::string pcpp::WireGuardLayer::getMessageTypeAsString

(

)

const

Returns

String representation of the message type.

getOsiModelLayer()

OsiModelLayer pcpp::WireGuardLayer::getOsiModelLayer ( ) const

inlineoverridevirtual

Returns

OSI model layer corresponding to the Network layer

Implements pcpp::Layer.

getReserved()

uint32_t pcpp::WireGuardLayer::getReserved

(

)

const

Returns

The reserved field as a 32-bit integer.

getWireGuardMessageType()

virtual WireGuardMessageType pcpp::WireGuardLayer::getWireGuardMessageType ( ) const

inlinevirtual

Returns

The message type as a WireGuardMessageType enum value.

Reimplemented in pcpp::WireGuardTransportDataLayer, pcpp::WireGuardCookieReplyLayer, pcpp::WireGuardHandshakeResponseLayer, and pcpp::WireGuardHandshakeInitiationLayer.

isDataValid()

static bool pcpp::WireGuardLayer::isDataValid ( const uint8_t *  data, size_t  dataLen  )

static

Checks if the given data represents a WireGuard message.

Parameters

data	Pointer to the raw data
dataLen	Length of the data

Returns

True if the data starts with a valid WireGuard message type, false otherwise

isWireGuardPorts()

static bool pcpp::WireGuardLayer::isWireGuardPorts ( uint16_t  portSrc, uint16_t  portDst  )

inlinestatic

Checks if the given port numbers are WireGuard ports.

Parameters

portSrc	The source port number to check
portDst	The destination port number to check

Returns

True if either port matches the WireGuard port (51820), false otherwise

parseWireGuardLayer()

static WireGuardLayer* pcpp::WireGuardLayer::parseWireGuardLayer ( uint8_t *  data, size_t  dataLen, Layer *  prevLayer, Packet *  packet  )

static

Parses the raw data into a WireGuard layer.

Parameters

data	Pointer to the raw data
dataLen	Length of the data
prevLayer	Pointer to the previous layer
packet	Pointer to the packet

Returns

A pointer to the parsed WireGuardLayer, or nullptr if parsing fails

setReserved()

void pcpp::WireGuardLayer::setReserved

(

const std::array< uint8_t, 3 > &

reserved

)

Parameters

reserved

The reserved field to set as a An array containing the 3-byte.

toString()

std::string pcpp::WireGuardLayer::toString ( ) const

overridevirtual

Converts the WireGuard layer to a string representation.

Returns

String representation of the WireGuard layer

Implements pcpp::Layer.