Forward declaration to OptionInt. More...

#include <option_int.h>

Inheritance diagram for isc::dhcp::OptionInt< T >:

Public Member Functions
	OptionInt (Option::Universe u, uint16_t type, OptionBufferConstIter begin, OptionBufferConstIter end)
	Constructor.

	OptionInt (Option::Universe u, uint16_t type, T value)
	Constructor.

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

T	getValue () const
	Return option value.

virtual uint16_t	len () const
	returns complete length of option

virtual void	pack (isc::util::OutputBuffer &buf, bool check=true) const
	Writes option in wire-format to buf, returns pointer to first unused byte after stored option.

void	setValue (T value)
	Set option value.

virtual std::string	toText (int indent=0) const
	Returns option carrying an integer value in the textual format.

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

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.

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)

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

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 bool	valid () const
	returns if option is valid (e.g.

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

template<typename T>
class isc::dhcp::OptionInt< T >

Forward declaration to OptionInt.

This template class represents DHCP option with single value.

This forward declaration is needed to access the OptionInt class without having to include the option_int.h header file. It is required because this header includes libdhcp++.h, and including option_int.h would cause circular inclusion between libdhcp++.h, option_definition.h and option6_int.h.

This value is of integer type and can be any of the following:

uint8_t,
uint16_t,
uint32_t,
int8_t,
int16_t,
int32_t.

Template Parameters

T	data field type (see above).

Definition at line 49 of file option_int.h.

Constructor & Destructor Documentation

◆ OptionInt() [1/2]

template<typename T >

isc::dhcp::OptionInt< T >::OptionInt	(	Option::Universe	u,
		uint16_t	type,
		T	value )

inline

Constructor.

Parameters

u	universe (V4 or V6)
type	option type.
value	option value.

Exceptions

isc::dhcp::InvalidDataType if data field type provided as template parameter is not a supported integer type.

Todo: Extend constructor to set encapsulated option space name.

Definition at line 65 of file option_int.h.

References DHCP4_OPTION_SPACE, DHCP6_OPTION_SPACE, isc_throw, isc::dhcp::Option::setEncapsulatedSpace(), and isc::dhcp::Option::V4.

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◆ OptionInt() [2/2]

template<typename T >

isc::dhcp::OptionInt< T >::OptionInt	(	Option::Universe	u,
		uint16_t	type,
		OptionBufferConstIter	begin,
		OptionBufferConstIter	end )

inline

Constructor.

This constructor creates option from a buffer. This constructor may throw exception if unpack function throws during buffer parsing.

Parameters

u	universe (V4 or V6)
type	option type.
begin	iterator to first byte of option data.
end	iterator to end of option data (first byte after option end).

Exceptions

isc::OutOfRange	if provided buffer is shorter than data size.
isc::dhcp::InvalidDataType	if data field type provided as template parameter is not a supported integer type.

Todo: Extend constructor to set encapsulated option space name.

Definition at line 88 of file option_int.h.

References DHCP4_OPTION_SPACE, DHCP6_OPTION_SPACE, isc_throw, isc::dhcp::Option::setEncapsulatedSpace(), isc::dhcp::OptionInt< T >::unpack(), and isc::dhcp::Option::V4.

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Member Function Documentation

◆ clone()

template<typename T >

virtual OptionPtr isc::dhcp::OptionInt< T >::clone ( ) const

inlinevirtual

Copies this option and returns a pointer to the copy.

Reimplemented from isc::dhcp::Option.

Definition at line 99 of file option_int.h.

References isc::dhcp::Option::cloneInternal().

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◆ getValue()

template<typename T >

T isc::dhcp::OptionInt< T >::getValue ( ) const

inline

Return option value.

Returns: option value.

Definition at line 191 of file option_int.h.

Referenced by isc::dhcp::OptionInt< T >::toText().

◆ len()

template<typename T >

virtual uint16_t isc::dhcp::OptionInt< T >::len ( ) const

inlinevirtual

returns complete length of option

Returns length of this option, including option header and suboptions

Returns: length of this option

Reimplemented from isc::dhcp::Option.

Definition at line 198 of file option_int.h.

References isc::dhcp::Option::getUniverse(), isc::dhcp::Option::OPTION4_HDR_LEN, isc::dhcp::Option::OPTION6_HDR_LEN, isc::dhcp::Option::options_, and isc::dhcp::Option::V4.

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◆ pack()

template<typename T >

virtual void isc::dhcp::OptionInt< T >::pack	(	isc::util::OutputBuffer &	buf,
		bool	check = true ) const

inlinevirtual

Writes option in wire-format to buf, returns pointer to first unused byte after stored option.

Parameters

[out]	buf	buffer (option will be stored here)
	check	if set to false, allows options larger than 255 for v4

Exceptions

isc::dhcp::InvalidDataType if size of a data field type is not equal to 1, 2 or 4 bytes. The data type is not checked in this function because it is checked in a constructor.

Reimplemented from isc::dhcp::Option.

Definition at line 112 of file option_int.h.

References isc::dhcp::Option::check(), isc_throw, isc::dhcp::Option::packHeader(), isc::dhcp::Option::packOptions(), isc::util::OutputBuffer::writeUint16(), isc::util::OutputBuffer::writeUint32(), and isc::util::OutputBuffer::writeUint8().

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◆ setValue()

template<typename T >

void isc::dhcp::OptionInt< T >::setValue ( T value )

inline

Set option value.

Parameters

value new option value.

Definition at line 186 of file option_int.h.

◆ toText()

template<typename T >

virtual std::string isc::dhcp::OptionInt< T >::toText ( int indent = 0 ) const

inlinevirtual

Returns option carrying an integer value in the textual format.

The returned value also includes the suboptions if present.

Parameters

indent Number of spaces to be inserted before the text.

Reimplemented from isc::dhcp::Option.

Definition at line 216 of file option_int.h.

References isc::dhcp::OptionDataTypeUtil::getDataTypeName(), isc::dhcp::OptionInt< T >::getValue(), isc::dhcp::Option::headerToText(), and isc::dhcp::Option::suboptionsToText().

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◆ unpack()

template<typename T >

virtual void isc::dhcp::OptionInt< T >::unpack	(	OptionBufferConstIter	begin,
		OptionBufferConstIter	end )

inlinevirtual

Parses received buffer.

Parses received buffer and returns offset to the first unused byte after parsed option.

Parameters

begin	iterator to first byte of option data
end	iterator to end of option data (first byte after option end)

Exceptions

isc::OutOfRange	if provided buffer is shorter than data size.
isc::dhcp::InvalidDataType	if size of a data field type is not equal to 1, 2 or 4 bytes. The data type is not checked in this function because it is checked in a constructor.

Reimplemented from isc::dhcp::Option.

Definition at line 148 of file option_int.h.

References isc::dhcp::Option::getType(), isc_throw, isc::util::readUint16(), isc::util::readUint32(), and isc::dhcp::Option::unpackOptions().

Referenced by isc::dhcp::OptionInt< T >::OptionInt().

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

Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ OptionInt() [1/2]

◆ OptionInt() [2/2]

Member Function Documentation

◆ clone()

◆ getValue()

◆ len()

◆ pack()

◆ setValue()

◆ toText()

◆ unpack()