pcpp::TpktLayer Class Reference

#include <TpktLayer.h>

Inheritance diagram for pcpp::TpktLayer:

Public Member Functions
	TpktLayer (uint8_t *data, size_t dataLen, Layer *prevLayer, Packet *packet)
	TpktLayer (uint8_t version, uint16_t length)
uint8_t	getReserved () const
uint8_t	getVersion () const
uint16_t	getLength () const
void	setVersion (uint8_t version) const
void	setLength (uint16_t length) const
size_t	getHeaderLen () const override
void	computeCalculateFields () override
void	parseNextLayer () override
std::string	toString () const override
OsiModelLayer	getOsiModelLayer () const override
Public Member Functions inherited from pcpp::Layer
virtual	~Layer ()
Layer *	getNextLayer () const
Layer *	getPrevLayer () const
ProtocolType	getProtocol () 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

Static Public Member Functions
static bool	isTpktPort (uint16_t portSrc, uint16_t portDst)
static bool	isDataValid (const uint8_t *data, size_t dataSize)

Detailed Description

Represents a TPKT (Transport Service on top of the TCP) protocol layer

Constructor & Destructor Documentation

TpktLayer() [1/2]

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

inline

A constructor that creates the layer from an existing packet raw data

Parameters

[in]	data	A pointer to the raw data (will be casted to tpkthdr)
[in]	dataLen	Size of the data in bytes
[in]	prevLayer	A pointer to the previous layer
[in]	packet	A pointer to the Packet instance where layer will be stored in

TpktLayer() [2/2]

pcpp::TpktLayer::TpktLayer	(	uint8_t	version,
		uint16_t	length
	)

A constructor that allocates a new TPKT header

Parameters

[in]	version	Protocol version number
[in]	length	Packet length

Member Function Documentation

computeCalculateFields()

void pcpp::TpktLayer::computeCalculateFields ( )

inlineoverridevirtual

Does nothing for this layer

Implements pcpp::Layer.

getHeaderLen()

size_t pcpp::TpktLayer::getHeaderLen ( ) const

inlineoverridevirtual

Returns

Size of tpkthdr

Implements pcpp::Layer.

getLength()

uint16_t pcpp::TpktLayer::getLength

(

)

const

Returns

TPKT length

getOsiModelLayer()

OsiModelLayer pcpp::TpktLayer::getOsiModelLayer ( ) const

inlineoverridevirtual

Returns

The OSI Model layer this protocol belongs to

Implements pcpp::Layer.

getReserved()

uint8_t pcpp::TpktLayer::getReserved

(

)

const

Returns

TPKT reserved

getVersion()

uint8_t pcpp::TpktLayer::getVersion

(

)

const

Returns

TPKT version

isDataValid()

static bool pcpp::TpktLayer::isDataValid ( const uint8_t *  data, size_t  dataSize  )

inlinestatic

A static method that takes a byte array and detects whether it is a TPKT message

Parameters

[in]	data	A byte array
[in]	dataSize	The byte array size (in bytes)

Returns

True if the data size is greater or equal than the size of tpkthdr

isTpktPort()

static bool pcpp::TpktLayer::isTpktPort ( uint16_t  portSrc, uint16_t  portDst  )

inlinestatic

A static method that checks whether a source or dest port match those associated with the TPKT protocol

Parameters

[in]	portSrc	Source port number to check
[in]	portDst	Dest port number to check

Returns

True if the source or dest port match those associated with the TPKT protocol

parseNextLayer()

void pcpp::TpktLayer::parseNextLayer ( )

overridevirtual

Currently parses the rest of the packet as a COTP protocol or generic payload (PayloadLayer)

Implements pcpp::Layer.

setLength()

void pcpp::TpktLayer::setLength

(

uint16_t

length

)

const

Set the value of the length

Parameters

[in]

length

The value of the length

setVersion()

void pcpp::TpktLayer::setVersion

(

uint8_t

version

)

const

Set the value of the version

Parameters

[in]

version

The value of the version

toString()

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

overridevirtual

Returns

A string representation of the layer most important data (should look like the layer description in Wireshark)

Implements pcpp::Layer.