DHCPv6 Option class for handling list of IPv6 addresses. More...

#include <option6_addrlst.h>

Inheritance diagram for isc::dhcp::Option6AddrLst:

Public Types
typedef std::vector< isc::asiolink::IOAddress >	AddressContainer
	a container for (IPv6) addresses

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...

Public Member Functions
	Option6AddrLst (uint16_t type, const AddressContainer &addrs)
	Constructor used during option generation.

	Option6AddrLst (uint16_t type, const isc::asiolink::IOAddress &addr)
	Simplified constructor for a single address.

	Option6AddrLst (uint16_t type, OptionBufferConstIter begin, OptionBufferConstIter end)
	Constructor used for parsing received option.

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

AddressContainer	getAddresses () const
	Returns vector with addresses.

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

void	pack (isc::util::OutputBuffer &buf, bool check=true) const
	Assembles on-wire form of this option.

void	setAddress (const isc::asiolink::IOAddress &addr)
	Sets a single address.

void	setAddresses (const AddressContainer &addrs)
	Sets list of addresses.

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

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

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.

Protected Attributes
AddressContainer	addrs_

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)

Additional Inherited Members
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.

Detailed Description

DHCPv6 Option class for handling list of IPv6 addresses.

This class handles a list of IPv6 addresses. An example of such option is dns-servers option. It can also be used to handle single address.

Definition at line 22 of file option6_addrlst.h.

Member Typedef Documentation

◆ AddressContainer

std::vector<isc::asiolink::IOAddress> isc::dhcp::Option6AddrLst::AddressContainer

a container for (IPv6) addresses

Definition at line 26 of file option6_addrlst.h.

Constructor & Destructor Documentation

◆ Option6AddrLst() [1/3]

isc::dhcp::Option6AddrLst::Option6AddrLst	(	uint16_t	type,
		const AddressContainer &	addrs )

Constructor used during option generation.

Parameters

type	option type
addrs	vector of addresses to be stored

Definition at line 29 of file option6_addrlst.cc.

◆ Option6AddrLst() [2/3]

isc::dhcp::Option6AddrLst::Option6AddrLst	(	uint16_t	type,
		const isc::asiolink::IOAddress &	addr )

Simplified constructor for a single address.

Parameters

type	option type
addr	a single address to be stored

Definition at line 33 of file option6_addrlst.cc.

◆ Option6AddrLst() [3/3]

isc::dhcp::Option6AddrLst::Option6AddrLst	(	uint16_t	type,
		OptionBufferConstIter	begin,
		OptionBufferConstIter	end )

Constructor used for parsing received option.

Parameters

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

Definition at line 37 of file option6_addrlst.cc.

References unpack().

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Member Function Documentation

◆ clone()

OptionPtr isc::dhcp::Option6AddrLst::clone ( ) const

virtual

Copies this option and returns a pointer to the copy.

This function must be overridden in the derived classes to make a copy of the derived type. The simplest way to do it is by calling cloneInternal function with an appropriate template parameter.

Returns: Pointer to the copy of the option.

Reimplemented from isc::dhcp::Option.

Definition at line 44 of file option6_addrlst.cc.

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

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◆ getAddresses()

AddressContainer isc::dhcp::Option6AddrLst::getAddresses ( ) const

inline

Returns vector with addresses.

We return a copy of our list. Although this includes overhead, it also makes this list safe to use after this option object is no longer available. As options are expected to hold only a few (1-3) addresses, the overhead is not that big.

Returns: address container with addresses

Definition at line 83 of file option6_addrlst.h.

References addrs_.

◆ len()

uint16_t isc::dhcp::Option6AddrLst::len ( ) const

virtual

Returns length of the complete option (data length + DHCPv4/DHCPv6 option header)

Returns: length of the option

Reimplemented from isc::dhcp::Option.

Definition at line 104 of file option6_addrlst.cc.

References addrs_, and isc::dhcp::Option::OPTION6_HDR_LEN.

Referenced by pack().

◆ pack()

void isc::dhcp::Option6AddrLst::pack	(	isc::util::OutputBuffer &	buf,
		bool	check = true ) const

virtual

Assembles on-wire form of this option.

Parameters

buf	pointer to packet buffer
check	if set to false, allows options larger than 255 for v4

Reimplemented from isc::dhcp::Option.

Definition at line 63 of file option6_addrlst.cc.

References addrs_, isc::dhcp::Option::getHeaderLen(), isc_throw, len(), isc::dhcp::Option::type_, isc::util::OutputBuffer::writeData(), and isc::util::OutputBuffer::writeUint16().

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◆ setAddress()

void isc::dhcp::Option6AddrLst::setAddress ( const isc::asiolink::IOAddress & addr )

Sets a single address.

Parameters

addr	a single address to be added

Definition at line 49 of file option6_addrlst.cc.

References addrs_, isc_throw, and isc::asiolink::IOAddress::isV6().

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◆ setAddresses()

void isc::dhcp::Option6AddrLst::setAddresses ( const AddressContainer & addrs )

Sets list of addresses.

Parameters

addrs a vector of addresses to be added

Definition at line 59 of file option6_addrlst.cc.

References addrs_.

◆ toText()

std::string isc::dhcp::Option6AddrLst::toText ( int indent = 0 ) const

virtual

Returns string representation of the option.

Parameters

indent number of spaces before printing text

Returns: string with text representation.

Reimplemented from isc::dhcp::Option.

Definition at line 94 of file option6_addrlst.cc.

References addrs_, and isc::dhcp::Option::headerToText().

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◆ unpack()

void isc::dhcp::Option6AddrLst::unpack	(	OptionBufferConstIter	begin,
		OptionBufferConstIter	end )

virtual

Parses received data.

Parameters

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

Reimplemented from isc::dhcp::Option.

Definition at line 81 of file option6_addrlst.cc.

References addrs_, isc::asiolink::IOAddress::fromBytes(), isc_throw, and isc::dhcp::Option::type_.

Referenced by Option6AddrLst().

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Member Data Documentation

◆ addrs_

AddressContainer isc::dhcp::Option6AddrLst::addrs_

protected

Definition at line 89 of file option6_addrlst.h.

Referenced by getAddresses(), len(), pack(), setAddress(), setAddresses(), toText(), and unpack().

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

Public Types

Public Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Member Typedef Documentation

◆ AddressContainer

Constructor & Destructor Documentation

◆ Option6AddrLst() [1/3]

◆ Option6AddrLst() [2/3]

◆ Option6AddrLst() [3/3]

Member Function Documentation

◆ clone()

◆ getAddresses()

◆ len()

◆ pack()

◆ setAddress()

◆ setAddresses()

◆ toText()

◆ unpack()

Member Data Documentation

◆ addrs_