pcpp::NflogLayer Class Reference

#include <NflogLayer.h>

Inheritance diagram for pcpp::NflogLayer:

Public Member Functions
	NflogLayer (uint8_t *data, size_t dataLen, Packet *packet)
nflog_header *	getNflogHeader () const
uint8_t	getFamily ()
uint8_t	getVersion ()
uint16_t	getResourceId ()
NflogTlv	getTlvByType (NflogTlvType type) const
void	parseNextLayer () override
size_t	getHeaderLen () const override
void	computeCalculateFields () override
	Does nothing for this layer.
std::string	toString () const override
OsiModelLayer	getOsiModelLayer () const override
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	isDataValid (const uint8_t *data, size_t dataLen)

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 an NFLOG protocol layer

Constructor & Destructor Documentation

NflogLayer()

pcpp::NflogLayer::NflogLayer ( uint8_t *  data, size_t  dataLen, 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 ether_header)
[in]	dataLen	Size of the data in bytes
[in]	packet	A pointer to the Packet instance where layer will be stored in

Member Function Documentation

getFamily()

uint8_t pcpp::NflogLayer::getFamily

(

)

Get address family of the packet. e.g. 2 for ipv4 and 10 for ipv6

Returns

an unsigned char of address family

getHeaderLen()

size_t pcpp::NflogLayer::getHeaderLen ( ) const

overridevirtual

Returns

Size of nflog_header

Implements pcpp::Layer.

getNflogHeader()

nflog_header* pcpp::NflogLayer::getNflogHeader ( ) const

inline

Get a pointer to the Nflog header.

Returns

A pointer to the nflog_header

getOsiModelLayer()

OsiModelLayer pcpp::NflogLayer::getOsiModelLayer ( ) const

inlineoverridevirtual

Returns

The OSI Model layer this protocol belongs to

Implements pcpp::Layer.

getResourceId()

uint16_t pcpp::NflogLayer::getResourceId

(

)

Get Resource Id in packet header On one netlink socket it's possible to listen to several nflog groups; the resource ID is the nflog group for the packet

getTlvByType()

NflogTlv pcpp::NflogLayer::getTlvByType

(

NflogTlvType

type

)

const

Get a TLV object found with the input type. if no tlv is found, the internal value of the object will set to nullptr

Parameters

[in]

type

type of tlv by using enum class defined as NflogTlvType

Returns

NflogTlv obtained by type

getVersion()

uint8_t pcpp::NflogLayer::getVersion

(

)

Get Version number inside packet header The version field is 0 for the current version of the pseudo-header

Returns

an unsigned char for version

isDataValid()

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

static

A static method that validates the input data

Parameters

[in]	data	The pointer to the beginning of a byte stream of an NFLOG packet
[in]	dataLen	The length of the byte stream

Returns

True if the data is valid and can represent an NFLOG packet

parseNextLayer()

void pcpp::NflogLayer::parseNextLayer ( )

overridevirtual

Currently identifies the following next layers: IPv4Layer, IPv6Layer using address family Otherwise sets PayloadLayer

Implements pcpp::Layer.

toString()

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

overridevirtual

Returns

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

Implements pcpp::Layer.