DHCP option at specific offset. More...

#include <localized_option.h>

Inheritance diagram for isc::perfdhcp::LocalizedOption:

Public Member Functions
	LocalizedOption (const boost::shared_ptr< dhcp::Option6IA > &opt_ia, const size_t offset)
	Copy constructor, creates LocalizedOption from Option6IA.

	LocalizedOption (dhcp::Option::Universe u, uint16_t type, const dhcp::OptionBuffer &data, const size_t offset=0)
	Constructor, used to create localized option from buffer.

	LocalizedOption (dhcp::Option::Universe u, uint16_t type, dhcp::OptionBufferConstIter first, dhcp::OptionBufferConstIter last, const size_t offset=0)
	Constructor, used to create option from buffer iterators.

size_t	getOffset () const
	Returns offset of an option in a DHCP packet.

virtual bool	valid () const
	Checks if option is valid.

Public Member Functions inherited from isc::dhcp::Option
	Option (const Option &source)
	Copy constructor.

	Option (Universe u, uint16_t type)
	ctor, used for options constructed, usually during transmission

	Option (Universe u, uint16_t type, const OptionBuffer &data)
	Constructor, used for received options.

	Option (Universe u, uint16_t type, OptionBufferConstIter first, OptionBufferConstIter last)
	Constructor, used for received options.

virtual	~Option ()
	just to force that every option has virtual dtor

void	addOption (OptionPtr opt)
	Adds a sub-option.

virtual OptionPtr	clone () const
	Copies this option and returns a pointer to the copy.

bool	delOption (uint16_t type)
	Attempts to delete first suboption of requested type.

virtual bool	equals (const Option &other) const
	Checks if two options are equal.

bool	equals (const OptionPtr &other) const
	Checks if options are equal.

virtual const OptionBuffer &	getData () const
	Returns pointer to actual data.

std::string	getEncapsulatedSpace () const
	Returns the name of the option space encapsulated by this option.

virtual uint16_t	getHeaderLen () const
	Returns length of header (2 for v4, 4 for v6)

OptionCollection &	getMutableOptions ()
	Returns all encapsulated options.

OptionPtr	getOption (uint16_t type) const
	Returns shared_ptr to suboption of specific type.

const OptionCollection &	getOptions () const
	Returns all encapsulated options.

void	getOptionsCopy (OptionCollection &options_copy) const
	Performs deep copy of suboptions.

uint16_t	getType () const
	Returns option type (0-255 for DHCPv4, 0-65535 for DHCPv6)

uint16_t	getUint16 () const
	Returns content of first word.

uint32_t	getUint32 () const
	Returns content of first double word.

uint8_t	getUint8 () const
	Returns content of first byte.

Universe	getUniverse () const
	returns option universe (V4 or V6)

virtual uint16_t	len () const
	Returns length of the complete option (data length + DHCPv4/DHCPv6 option header)

Option &	operator= (const Option &rhs)
	Assignment operator.

virtual void	pack (isc::util::OutputBuffer &buf, bool check=true) const
	Writes option in wire-format to a buffer.

template<typename InputIterator >
void	setData (InputIterator first, InputIterator last)
	Sets content of this option from buffer.

void	setEncapsulatedSpace (const std::string &encapsulated_space)
	Sets the name of the option space encapsulated by this option.

void	setUint16 (uint16_t value)
	Sets content of this option to a single uint16 value.

void	setUint32 (uint32_t value)
	Sets content of this option to a single uint32 value.

void	setUint8 (uint8_t value)
	Sets content of this option to a single uint8 value.

virtual std::vector< uint8_t >	toBinary (const bool include_header=false) const
	Returns binary representation of the option.

virtual std::string	toHexString (const bool include_header=false) const
	Returns string containing hexadecimal representation of option.

virtual std::string	toString () const
	Returns string representation of the value.

virtual std::string	toText (int indent=0) const
	Returns string representation of the option.

virtual void	unpack (OptionBufferConstIter begin, OptionBufferConstIter end)
	Parses received buffer.

Additional Inherited Members
Public Types inherited from isc::dhcp::Option
typedef OptionPtr	Factory(Option::Universe u, uint16_t type, const OptionBuffer &buf)
	a factory function prototype

enum	Universe { V4 , V6 }
	defines option universe DHCPv4 or DHCPv6 More...

Static Public Member Functions inherited from isc::dhcp::Option
static OptionPtr	create (Universe u, uint16_t type)
	Factory function creating an instance of the `Option`.

static OptionPtr	create (Universe u, uint16_t type, const OptionBuffer &data)
	Factory function creating an instance of the `Option`.

static OptionPtr	factory (Option::Universe u, uint16_t type)
	Factory function to create instance of option.

static OptionPtr	factory (Option::Universe u, uint16_t type, const OptionBuffer &buf)
	Factory function to create instance of option.

Static Public Attributes inherited from isc::dhcp::Option
static bool	lenient_parsing_
	Governs whether options should be parsed less strictly.

static const size_t	OPTION4_HDR_LEN = 2
	length of the usual DHCPv4 option header (there are exceptions)

static const size_t	OPTION6_HDR_LEN = 4
	length of any DHCPv6 option header

Protected Member Functions inherited from isc::dhcp::Option
void	check () const
	A protected method used for option correctness.

template<typename OptionType >
OptionPtr	cloneInternal () const
	Copies this option and returns a pointer to the copy.

std::string	headerToText (const int indent=0, const std::string &type_name="") const
	Returns option header in the textual format.

void	packHeader (isc::util::OutputBuffer &buf, bool check=true) const
	Store option's header in a buffer.

void	packOptions (isc::util::OutputBuffer &buf, bool check=true) const
	Store sub options in a buffer.

std::string	suboptionsToText (const int indent=0) const
	Returns collection of suboptions in the textual format.

void	unpackOptions (const OptionBuffer &buf)
	Builds a collection of sub options from the buffer.

Protected Attributes inherited from isc::dhcp::Option
OptionBuffer	data_
	contains content of this data

std::string	encapsulated_space_
	Name of the option space being encapsulated by this option.

OptionCollection	options_
	collection for storing suboptions

uint16_t	type_
	option type (0-255 for DHCPv4, 0-65535 for DHCPv6)

Universe	universe_
	option universe (V4 or V6)

Detailed Description

DHCP option at specific offset.

This class represents DHCP option with data placed at specified offset in DHCP message. Objects of this type are intended to be used when DHCP packets are created from templates (e.g. read from template file). Such packets have number of options with contents that have to be replaced before sending: e.g. DUID can be randomized. If option of this type is added to PerfPkt6 options collection, perfdhcp::PerfPkt6 will call getOffset on this object to retrieve user-defined option position and replace contents of the output buffer at this offset before packet is sent to the server. (

See also: perfdhcp::PerfPkt6::rawPack). In order to read on-wire data from incoming packet client class has to specify options of perfdhcp::LocalizedOption type with expected offsets of these options in a packet. The perfdhcp::PerfPkt6 will use offsets to read fragments of packet and store them in options' buffers. (; perfdhcp::PerfPkt6::rawUnpack).

Definition at line 37 of file localized_option.h.

Constructor & Destructor Documentation

◆ LocalizedOption() [1/3]

isc::perfdhcp::LocalizedOption::LocalizedOption	(	dhcp::Option::Universe	u,
		uint16_t	type,
		const dhcp::OptionBuffer &	data,
		const size_t	offset = 0 )

inline

Constructor, used to create localized option from buffer.

This constructor creates localized option using whole provided option buffer.

Parameters

u	universe (V4 or V6).
type	option type (0-255 for V4 and 0-65535 for V6). Option values 0 and 255 (v4) and 0 (v6) are not valid option codes but they are accepted here for the server testing purposes.
data	content of the option.
offset	location of option in a packet (zero is default).

Definition at line 51 of file localized_option.h.

◆ LocalizedOption() [2/3]

isc::perfdhcp::LocalizedOption::LocalizedOption	(	dhcp::Option::Universe	u,
		uint16_t	type,
		dhcp::OptionBufferConstIter	first,
		dhcp::OptionBufferConstIter	last,
		const size_t	offset = 0 )

inline

Constructor, used to create option from buffer iterators.

This constructor creates localized option using part of the option buffer pointed by iterators.

Parameters

u	specifies universe (V4 or V6)
type	option type (0-255 for V4 and 0-65535 for V6)
first	iterator to the first element that should be copied
last	iterator to the next element after the last one to be copied.
offset	offset of option in a packet (zero is default)

Definition at line 70 of file localized_option.h.

◆ LocalizedOption() [3/3]

isc::perfdhcp::LocalizedOption::LocalizedOption	(	const boost::shared_ptr< dhcp::Option6IA > &	opt_ia,
		const size_t	offset )

inline

Copy constructor, creates LocalizedOption from Option6IA.

This copy constructor creates regular option from Option6IA. The data from Option6IA data members are copied to option buffer in appropriate sequence.

Parameters

opt_ia	option to be copied.
offset	location of the option in a packet.

Definition at line 87 of file localized_option.h.

References isc::dhcp::Option::data_, isc::util::OutputBuffer::getData(), isc::util::OutputBuffer::getLength(), isc::dhcp::Option::type_, and isc::dhcp::Option::universe_.

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Member Function Documentation

◆ getOffset()

size_t isc::perfdhcp::LocalizedOption::getOffset ( ) const

inline

Returns offset of an option in a DHCP packet.

Returns: option offset in a packet

Definition at line 124 of file localized_option.h.

◆ valid()

virtual bool isc::perfdhcp::LocalizedOption::valid ( ) const

inlinevirtual

Checks if option is valid.

Returns: true, if option is valid.

Reimplemented from isc::dhcp::Option.

Definition at line 129 of file localized_option.h.

The documentation for this class was generated from the following file:

localized_option.h

Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ LocalizedOption() [1/3]

◆ LocalizedOption() [2/3]

◆ LocalizedOption() [3/3]

Member Function Documentation

◆ getOffset()

◆ valid()