DUID Class Reference

Holds DUID (DHCPv6 Unique Identifier) More...

#include <duid.h>

Inheritance diagram for DUID:

Public Types
enum	DUIDType {   DUID_UNKNOWN = 0 , DUID_LLT = 1 , DUID_EN = 2 , DUID_LL = 3 ,   DUID_UUID = 4 , DUID_MAX }
	specifies DUID type More...

Public Member Functions
	DUID (const std::vector< uint8_t > &data)
	Constructor from vector.
	DUID (const uint8_t *data, size_t len)
	Constructor from array and array size.
const std::vector< uint8_t > &	getDuid () const
	Returns a const reference to the actual DUID value.
DUIDType	getType () const
	Returns the DUID type.
Public Member Functions inherited from isc::dhcp::IdentifierType< 3, 130 >
	IdentifierType (const std::vector< uint8_t > &data)
	Constructor from vector.
	IdentifierType (const uint8_t *data, size_t len)
	Constructor from array and array size.
bool	operator!= (const IdentifierType &other) const
	Compares two identifiers for inequality.
bool	operator== (const IdentifierType &other) const
	Compares two identifiers for equality.
std::string	toText () const
	Returns textual representation of the identifier (e.g.

Static Public Member Functions
static const DUID &	EMPTY ()
	Defines the constant "empty" DUID.
static DUID	fromText (const std::string &text)
	Create DUID from the textual format.
Static Public Member Functions inherited from isc::dhcp::IdentifierType< 3, 130 >
static std::vector< uint8_t >	fromText (const std::string &text)
	This static function parses an Identifier specified in the textual format.
static constexpr size_t	getMaxSize ()
	Return the maximum size of the acceptable data.
static constexpr size_t	getMinSize ()
	Return the minimum size of the acceptable data.

Static Public Attributes
static constexpr size_t	MAX_DUID_LEN = IdentifierType::getMaxSize()
	maximum duid size
static constexpr size_t	MIN_DUID_LEN = IdentifierType::getMinSize()
	minimum duid size

Additional Inherited Members
Protected Member Functions inherited from isc::dhcp::IdentifierBaseType
virtual	~IdentifierBaseType ()=0
	Pure virtual destructor.
Protected Attributes inherited from isc::dhcp::IdentifierType< 3, 130 >
std::vector< uint8_t >	data_
	The actual content of the Identifier.

Detailed Description

Holds DUID (DHCPv6 Unique Identifier)

This class holds DUID, that is used in client-id, server-id and several other options. It is used to identify DHCPv6 entity.

Definition at line 142 of file duid.h.

Member Enumeration Documentation

DUIDType

enum isc::dhcp::DUID::DUIDType

specifies DUID type

Enumerator
DUID_UNKNOWN	invalid/unknown type
DUID_LLT	link-layer + time, see RFC3315, section 11.2
DUID_EN	enterprise-id, see RFC3315, section 11.3
DUID_LL	link-layer, see RFC3315, section 11.4
DUID_UUID	UUID, see RFC3315, section 11.5.
DUID_MAX	not a real type, just maximum defined value + 1

Definition at line 158 of file duid.h.

Constructor & Destructor Documentation

DUID() [1/2]

isc::dhcp::DUID::DUID

(

const std::vector< uint8_t > &

data

)

Constructor from vector.

Parameters

data	The data used to create the DUID

Definition at line 27 of file duid.cc.

DUID() [2/2]

isc::dhcp::DUID::DUID	(	const uint8_t *	data,
		size_t	len )

Constructor from array and array size.

Parameters

data	The data used to create the DUID
len	The data len used to create the DUID

Definition at line 30 of file duid.cc.

Member Function Documentation

EMPTY()

const DUID & isc::dhcp::DUID::EMPTY ( )

static

Defines the constant "empty" DUID.

In general, empty DUID is not allowed. The only case where it is really valid is to designate declined IPv6 Leases. We have a broad assumption that the Lease->duid_ must always be set. However, declined lease doesn't have any DUID associated with it. Hence we need a way to indicate that fact.

Returns

reference to the static constant empty DUID

Definition at line 55 of file duid.cc.

fromText()

DUID isc::dhcp::DUID::fromText ( const std::string & text )

static

Create DUID from the textual format.

This static function parses a DUID specified in the textual format.

Parameters

text	DUID in the hexadecimal format with digits representing individual bytes separated by colons.

Exceptions

isc::BadValue

if parsing the DUID failed.

Definition at line 50 of file duid.cc.

Referenced by isc::radius::RadiusAccounting::buildAcct6(), isc::lease_cmds::LeaseCmdsImpl::getParameters(), isc::lease_cmds::LeaseCmdsImpl::leaseGetByDuidHandler(), and isc::lease_cmds::Lease6Parser::parse().

getDuid()

const std::vector< uint8_t > & isc::dhcp::DUID::getDuid

(

)

const

Returns a const reference to the actual DUID value.

Warning

Since this function returns a reference to the vector (not a copy) the returned object must be used with caution because it remains valid only for the time period when the object which returned it is valid.

Returns

A reference to a vector holding a DUID.

Definition at line 33 of file duid.cc.

getType()

DUID::DUIDType isc::dhcp::DUID::getType

(

)

const

Returns the DUID type.

Definition at line 37 of file duid.cc.

Member Data Documentation

MAX_DUID_LEN

size_t isc::dhcp::DUID::MAX_DUID_LEN = IdentifierType::getMaxSize()

staticconstexpr

maximum duid size

The maximum DUID size specified in RFC 8415, section 11.1 is 130: 2 fixed octets for the type + 128 maximum octets for the value.

Definition at line 155 of file duid.h.

MIN_DUID_LEN

size_t isc::dhcp::DUID::MIN_DUID_LEN = IdentifierType::getMinSize()

staticconstexpr

minimum duid size

The minimal DUID size specified in RFC 8415, section 11.1 is 3: 2 fixed octets for the type + 1 minimum octet for the value.

Definition at line 149 of file duid.h.

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

• duid.h
• duid.cc