pcpp::IgmpV3ReportLayer Class Reference

#include <IgmpLayer.h>

Inheritance diagram for pcpp::IgmpV3ReportLayer:

Public Member Functions
	IgmpV3ReportLayer (uint8_t *data, size_t dataLen, Layer *prevLayer, Packet *packet)
	IgmpV3ReportLayer ()
igmpv3_report_header *	getReportHeader () const
uint16_t	getGroupRecordCount () const
igmpv3_group_record *	getFirstGroupRecord () const
igmpv3_group_record *	getNextGroupRecord (igmpv3_group_record *groupRecord) const
igmpv3_group_record *	addGroupRecord (uint8_t recordType, const IPv4Address &multicastAddress, const std::vector< IPv4Address > &sourceAddresses)
igmpv3_group_record *	addGroupRecordAtIndex (uint8_t recordType, const IPv4Address &multicastAddress, const std::vector< IPv4Address > &sourceAddresses, int index)
bool	removeGroupRecordAtIndex (int index)
bool	removeAllGroupRecords ()
void	computeCalculateFields ()
size_t	getHeaderLen () const
Public Member Functions inherited from pcpp::IgmpLayer
igmp_header *	getIgmpHeader () const
IPv4Address	getGroupAddress () const
void	setGroupAddress (const IPv4Address &groupAddr)
IgmpType	getType () const
void	setType (IgmpType type)
void	parseNextLayer ()
std::string	toString () const
OsiModelLayer	getOsiModelLayer () const
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

Additional Inherited Members
Static Public Member Functions inherited from pcpp::IgmpLayer
static ProtocolType	getIGMPVerFromData (uint8_t *data, size_t dataLen, bool &isQuery)

Detailed Description

Represents an IGMPv3 (Internet Group Management Protocol ver 3) membership report message

Constructor & Destructor Documentation

IgmpV3ReportLayer() [1/2]

pcpp::IgmpV3ReportLayer::IgmpV3ReportLayer	(	uint8_t *	data,
		size_t	dataLen,
		Layer *	prevLayer,
		Packet *	packet
	)

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

Parameters

[in]	data	A pointer to the raw data
[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

IgmpV3ReportLayer() [2/2]

pcpp::IgmpV3ReportLayer::IgmpV3ReportLayer

(

)

A constructor that allocates a new IGMPv3 membership report with 0 group addresses

Member Function Documentation

addGroupRecord()

igmpv3_group_record* pcpp::IgmpV3ReportLayer::addGroupRecord	(	uint8_t	recordType,
		const IPv4Address &	multicastAddress,
		const std::vector< IPv4Address > &	sourceAddresses
	)

Add a new group record at a the end of the group record list. The igmpv3_report_header::numOfGroupRecords field will be incremented accordingly

Parameters

[in]	recordType	The type of the new group record
[in]	multicastAddress	The multicast address of the new group record
[in]	sourceAddresses	A vector containing all the source addresses of the new group record

Returns

The method constructs a new group record, adds it to the end of the group record list of IGMPv3 report message and returns a pointer to the new message. If something went wrong in creating or adding the new group record a NULL value is returned and an appropriate error message is printed to log

addGroupRecordAtIndex()

igmpv3_group_record* pcpp::IgmpV3ReportLayer::addGroupRecordAtIndex	(	uint8_t	recordType,
		const IPv4Address &	multicastAddress,
		const std::vector< IPv4Address > &	sourceAddresses,
		int	index
	)

Add a new group record at a certain index of the group record list. The igmpv3_report_header::numOfGroupRecords field will be incremented accordingly

Parameters

[in]	recordType	The type of the new group record
[in]	multicastAddress	The multicast address of the new group record
[in]	sourceAddresses	A vector containing all the source addresses of the new group record
[in]	index	The index to add the new group address at

Returns

The method constructs a new group record, adds it to the IGMPv3 report message and returns a pointer to the new message. If something went wrong in creating or adding the new group record a NULL value is returned and an appropriate error message is printed to log

computeCalculateFields()

void pcpp::IgmpV3ReportLayer::computeCalculateFields ( )

virtual

Calculate the IGMP checksum

Implements pcpp::Layer.

getFirstGroupRecord()

igmpv3_group_record* pcpp::IgmpV3ReportLayer::getFirstGroupRecord

(

)

const

Returns

A pointer to the first group record or NULL if no group records exist. Notice the return value is a pointer to the real data, so changes in the return value will affect the packet data

getGroupRecordCount()

uint16_t pcpp::IgmpV3ReportLayer::getGroupRecordCount

(

)

const

Returns

The number of group records in this message (as extracted from the igmpv3_report_header::numOfGroupRecords field)

getHeaderLen()

size_t pcpp::IgmpV3ReportLayer::getHeaderLen ( ) const

inlinevirtual

Returns

The message size in bytes which include the size of the basic header + the size of the group record list

Reimplemented from pcpp::IgmpLayer.

getNextGroupRecord()

igmpv3_group_record* pcpp::IgmpV3ReportLayer::getNextGroupRecord

(

igmpv3_group_record *

groupRecord

)

const

Get the group record that comes next to a given group record. If "groupRecord" is NULL then NULL will be returned. If "groupRecord" is the last group record or if it is out of layer bounds NULL will be returned also. Notice the return value is a pointer to the real data casted to igmpv3_group_record type (as opposed to a copy of the option data). So changes in the return value will affect the packet data

Parameters

[in]

groupRecord

The group record to start searching from

Returns

The next group record or NULL if "groupRecord" is NULL, last or out of layer bounds

getReportHeader()

igmpv3_report_header* pcpp::IgmpV3ReportLayer::getReportHeader ( ) const

inline

Get a pointer to the raw IGMPv3 membership report header. Notice this points directly to the data, so every change will change the actual packet data

Returns

A pointer to the igmpv3_report_header

removeAllGroupRecords()

bool pcpp::IgmpV3ReportLayer::removeAllGroupRecords

(

)

Remove all group records in the message. The igmpv3_report_header::numOfGroupRecords field will be set to 0

Returns

True if all group records were cleared successfully or false otherwise. If false is returned an appropriate error message will be printed to log

removeGroupRecordAtIndex()

bool pcpp::IgmpV3ReportLayer::removeGroupRecordAtIndex

(

int

index

)

Remove a group record at a certain index. The igmpv3_report_header::numOfGroupRecords field will be decremented accordingly

Parameters

[in]

index

The index of the group record to be removed

Returns

True if group record was removed successfully or false otherwise. If false is returned an appropriate error message will be printed to log