A configuration holder for IPv4 subnet. More...

#include <subnet.h>

Inheritance diagram for isc::dhcp::Subnet4:

Public Member Functions
	Subnet4 (const isc::asiolink::IOAddress &prefix, uint8_t length, const Triplet< uint32_t > &t1, const Triplet< uint32_t > &t2, const Triplet< uint32_t > &valid_lifetime, const SubnetID id=0)
	Constructor with all parameters. More...

virtual bool	clientSupported (const isc::dhcp::ClientClasses &client_classes) const
	Checks whether this subnet and parent shared network supports the client that belongs to specified classes. More...

Cfg4o6 &	get4o6 ()
	Returns DHCP4o6 configuration parameters. More...

const Cfg4o6 &	get4o6 () const
	Returns const DHCP4o6 configuration parameters. More...

const std::string &	getFilename () const
	Returns boot file name for this subnet. More...

Subnet4Ptr	getNextSubnet (const Subnet4Ptr &first_subnet) const
	Returns next subnet within shared network. More...

Subnet4Ptr	getNextSubnet (const Subnet4Ptr &first_subnet, const ClientClasses &client_classes) const
	Returns next subnet within shared network that matches client classes. More...

isc::asiolink::IOAddress	getSiaddr () const
	Returns siaddr for this subnet. More...

const std::string &	getSname () const
	Returns server hostname for this subnet. More...

void	setFilename (const std::string &filename)
	Sets boot file name for the Subnet4. More...

void	setSiaddr (const isc::asiolink::IOAddress &siaddr)
	Sets siaddr for the Subnet4. More...

void	setSname (const std::string &sname)
	Sets server hostname for the Subnet4. More...

virtual data::ElementPtr	toElement () const
	Unparse a subnet object. More...

Public Member Functions inherited from isc::dhcp::Subnet
void	addPool (const PoolPtr &pool)
	Adds a new pool for the subnet. More...

void	delPools (Lease::Type type)
	Deletes all pools of specified type. More...

std::pair< isc::asiolink::IOAddress, uint8_t >	get () const
	Returns subnet parameters (prefix and prefix length) More...

PoolPtr	getAnyPool (Lease::Type type)
	Returns a pool without any address specified. More...

SubnetID	getID () const
	Returns unique ID for that subnet. More...

isc::asiolink::IOAddress	getLastAllocated (Lease::Type type) const
	returns the last address that was tried from this subnet More...

boost::posix_time::ptime	getLastAllocatedTime (const Lease::Type &lease_type) const
	Returns the timestamp when the `setLastAllocated` function was called. More...

const PoolPtr	getPool (Lease::Type type, const ClientClasses &client_classes, const isc::asiolink::IOAddress &addr) const
	Returns a pool that specified address belongs to with classes. More...

const PoolPtr	getPool (Lease::Type type, const isc::asiolink::IOAddress &addr, bool anypool=true) const
	Returns a pool that specified address belongs to. More...

uint64_t	getPoolCapacity (Lease::Type type) const
	Returns the number of possible leases for specified lease type. More...

uint64_t	getPoolCapacity (Lease::Type type, const ClientClasses &client_classes) const
	Returns the number of possible leases for specified lease type allowed for a client which belongs to classes. More...

const PoolCollection &	getPools (Lease::Type type) const
	Returns all pools (const variant) More...

template<typename SharedNetworkPtrType >
void	getSharedNetwork (SharedNetworkPtrType &shared_network) const
	Retrieves pointer to a shared network associated with a subnet. More...

std::string	getSharedNetworkName () const
	Returns shared network name. More...

bool	inPool (Lease::Type type, const isc::asiolink::IOAddress &addr) const
	checks if the specified address is in pools More...

bool	inPool (Lease::Type type, const isc::asiolink::IOAddress &addr, const ClientClasses &client_classes) const
	checks if the specified address is in allowed pools More...

bool	inRange (const isc::asiolink::IOAddress &addr) const
	checks if specified address is in range More...

void	setLastAllocated (Lease::Type type, const isc::asiolink::IOAddress &addr)
	sets the last address that was tried from this subnet More...

void	setSharedNetworkName (const std::string &shared_network_name)
	Sets new shared network name. More...

virtual std::string	toText () const
	Returns textual representation of the subnet (e.g. More...

Public Member Functions inherited from isc::data::UserContext
void	contextToElement (data::ElementPtr map) const
	Merge unparse a user_context object. More...

data::ConstElementPtr	getContext () const
	Returns const pointer to the user context. More...

void	setContext (const data::ConstElementPtr &ctx)
	Sets user context. More...

Public Member Functions inherited from isc::data::CfgToElement
virtual	~CfgToElement ()
	Destructor. More...

Public Member Functions inherited from isc::dhcp::Network4
	Network4 ()
	Constructor. More...

bool	getAuthoritative () const
	Returns the flag indicating if requests for unknown IP addresses should be rejected with DHCPNAK instead of ignored. More...

bool	getMatchClientId () const
	Returns the flag indicating if the client identifiers should be used to identify the client's lease. More...

virtual asiolink::IOAddress	getServerId () const
	Returns binary representation of the dhcp-server-identifier option (54). More...

void	setAuthoritative (const bool authoritative)
	Sets the flag indicating if requests for unknown IP addresses should be rejected with DHCPNAK instead of ignored. More...

void	setMatchClientId (const bool match)
	Sets the flag indicating if the client identifier should be used to identify the client's lease. More...

Public Member Functions inherited from isc::dhcp::Network
	Network ()
	Constructor. More...

virtual	~Network ()
	Virtual destructor. More...

void	addRelayAddress (const asiolink::IOAddress &addr)
	Adds an address to the list addresses in the network's relay info. More...

void	allowClientClass (const isc::dhcp::ClientClass &class_name)
	Sets the supported class to class class_name. More...

CfgOptionPtr	getCfgOption ()
	Returns pointer to the option data configuration for this subnet. More...

ConstCfgOptionPtr	getCfgOption () const
	Returns const pointer to the option data configuration for this subnet. More...

const isc::dhcp::ClientClass &	getClientClass () const
	returns the client class More...

HRMode	getHostReservationMode () const
	Specifies what type of Host Reservations are supported. More...

std::string	getIface () const
	Returns name of the local interface for which this network is selected. More...

const IOAddressList &	getRelayAddresses () const
	Returns the list of relay addresses from the network's relay info. More...

const RelayInfo &	getRelayInfo () const
	Returns const reference to relay information. More...

const isc::dhcp::ClientClasses &	getRequiredClasses () const
	Returns classes which are required to be evaluated. More...

Triplet< uint32_t >	getT1 () const
	Returns T1 (renew timer), expressed in seconds. More...

Triplet< uint32_t >	getT2 () const
	Returns T2 (rebind timer), expressed in seconds. More...

Triplet< uint32_t >	getValid () const
	Return valid-lifetime for addresses in that prefix. More...

bool	hasRelayAddress (const asiolink::IOAddress &address) const
	Tests if the network's relay info contains the given address. More...

bool	hasRelays () const
	Indicates if network's relay info has relay addresses. More...

void	requireClientClass (const isc::dhcp::ClientClass &class_name)
	Adds class class_name to classes required to be evaluated. More...

void	setHostReservationMode (HRMode mode)
	Sets host reservation mode. More...

void	setIface (const std::string &iface_name)
	Sets local name of the interface for which this network is selected. More...

void	setRelayInfo (const RelayInfo &relay)
	Sets information about relay. More...

void	setT1 (const Triplet< uint32_t > &t1)
	Sets new renew timer for a network. More...

void	setT2 (const Triplet< uint32_t > &t2)
	Sets new rebind timer for a network. More...

void	setValid (const Triplet< uint32_t > &valid)
	Sets new valid lifetime for a network. More...

Public Member Functions inherited from isc::data::StampedElement
	StampedElement ()
	Constructor. More...

boost::posix_time::ptime	getModificationTime () const
	Returns timestamp. More...

void	setModificationTime (const boost::posix_time::ptime &timestamp)
	Sets timestamp to the explicitly provided value. More...

void	updateModificationTime ()
	Sets timestmp to the current time. More...

Static Public Member Functions
static std::pair< asiolink::IOAddress, uint8_t >	parsePrefix (const std::string &prefix)
	Converts subnet prefix to a pair of prefix/length pair. More...

Static Public Member Functions inherited from isc::dhcp::Subnet
static void	resetSubnetID ()
	Resets subnet-id counter to its initial value (1) More...

Static Public Member Functions inherited from isc::data::UserContext
static data::ElementPtr	toElement (data::ConstElementPtr map)
	Copy extracting comments an Element map. More...

Additional Inherited Members
Public Types inherited from isc::dhcp::Network
enum	HRMode { HR_DISABLED, HR_OUT_OF_POOL, HR_GLOBAL, HR_ALL }
	Specifies allowed host reservation mode. More...

typedef boost::shared_ptr< Network::RelayInfo >	RelayInfoPtr
	Pointer to the RelayInfo structure. More...

Protected Member Functions inherited from isc::dhcp::Subnet
	Subnet (const isc::asiolink::IOAddress &prefix, uint8_t len, const SubnetID id)
	Protected constructor. More...

virtual	~Subnet ()
	virtual destructor More...

PoolCollection &	getPoolsWritable (Lease::Type type)
	Returns all pools (non-const variant) More...

bool	poolOverlaps (const Lease::Type &pool_type, const PoolPtr &pool) const
	Checks if the specified pool overlaps with an existing pool. More...

uint64_t	sumPoolCapacity (const PoolCollection &pools) const
	Returns a sum of possible leases in all pools. More...

uint64_t	sumPoolCapacity (const PoolCollection &pools, const ClientClasses &client_classes) const
	Returns a sum of possible leases in all pools allowing classes. More...

Static Protected Member Functions inherited from isc::dhcp::Subnet
static SubnetID	generateNextID ()
	returns the next unique Subnet-ID More...

static std::pair< asiolink::IOAddress, uint8_t >	parsePrefixCommon (const std::string &prefix)
	Converts subnet prefix to a pair of prefix/length pair. More...

Protected Attributes inherited from isc::dhcp::Subnet
SubnetID	id_
	subnet-id More...

std::string	iface_
	Name of the network interface (if connected directly) More...

isc::asiolink::IOAddress	last_allocated_ia_
	last allocated address More...

isc::asiolink::IOAddress	last_allocated_pd_
	last allocated IPv6 prefix More...

isc::asiolink::IOAddress	last_allocated_ta_
	last allocated temporary address More...

std::map< Lease::Type, boost::posix_time::ptime >	last_allocated_time_
	Timestamp indicating when a lease of a specified type has been last allocated from this subnet. More...

PoolCollection	pools_
	collection of IPv4 or non-temporary IPv6 pools in that subnet More...

PoolCollection	pools_pd_
	collection of IPv6 prefix pools in that subnet More...

PoolCollection	pools_ta_
	collection of IPv6 temporary address pools in that subnet More...

isc::asiolink::IOAddress	prefix_
	a prefix of the subnet More...

uint8_t	prefix_len_
	a prefix length of the subnet More...

WeakNetworkPtr	shared_network_
	Pointer to a shared network that subnet belongs to. More...

std::string	shared_network_name_
	Shared network name. More...

Protected Attributes inherited from isc::data::UserContext
data::ConstElementPtr	user_context_
	Pointer to the user context (may be NULL) More...

Protected Attributes inherited from isc::dhcp::Network
CfgOptionPtr	cfg_option_
	Pointer to the option data configuration for this subnet. More...

ClientClass	client_class_
	Optional definition of a client class. More...

HRMode	host_reservation_mode_
	Specifies host reservation mode. More...

std::string	iface_name_
	Holds interface name for which this network is selected. More...

RelayInfo	relay_
	Relay information. More...

ClientClasses	required_classes_
	Required classes. More...

Triplet< uint32_t >	t1_
	a Triplet (min/default/max) holding allowed renew timer values More...

Triplet< uint32_t >	t2_
	a Triplet (min/default/max) holding allowed rebind timer values More...

Triplet< uint32_t >	valid_
	a Triplet (min/default/max) holding allowed valid lifetime values More...

Static Protected Attributes inherited from isc::dhcp::Subnet
static SubnetID	static_id_ = 1
	keeps the subnet-id value More...

Detailed Description

A configuration holder for IPv4 subnet.

This class represents an IPv4 subnet.

Note: Subnet and Network use virtual inheritance to avoid a diamond issue with UserContext

Definition at line 471 of file subnet.h.

Constructor & Destructor Documentation

◆ Subnet4()

isc::dhcp::Subnet4::Subnet4	(	const isc::asiolink::IOAddress &	prefix,
		uint8_t	length,
		const Triplet< uint32_t > &	t1,
		const Triplet< uint32_t > &	t2,
		const Triplet< uint32_t > &	valid_lifetime,
		const SubnetID	id = `0`
	)

Constructor with all parameters.

This constructor calls Subnet::Subnet, where subnet-id is generated.

Parameters

prefix	Subnet4 prefix
length	prefix length
t1	renewal timer (in seconds)
t2	rebind timer (in seconds)
valid_lifetime	preferred lifetime of leases (in seconds)
id	arbitrary subnet id, default value of 0 triggers autogeneration of subnet id

Definition at line 244 of file subnet.cc.

References isc_throw, isc::asiolink::IOAddress::isV4(), isc::dhcp::Network::setT1(), isc::dhcp::Network::setT2(), isc::dhcp::Network::setValid(), and isc::asiolink::IOAddress::toText().

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Member Function Documentation

◆ clientSupported()

bool isc::dhcp::Subnet4::clientSupported ( const isc::dhcp::ClientClasses & client_classes ) const

virtual

Checks whether this subnet and parent shared network supports the client that belongs to specified classes.

This method extends the Network::clientSupported method with additional checks whether shared network owning this class supports the client belonging to specified classes. If the class doesn't belong to a shared network this method only checks if the subnet supports specified classes.

Parameters

client_classes List of classes the client belongs to.

Returns: true if client can be supported, false otherwise.

Reimplemented from isc::dhcp::Network.

Definition at line 302 of file subnet.cc.

References isc::dhcp::Network::clientSupported(), and isc::dhcp::Subnet::getSharedNetwork().

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◆ get4o6() [1/2]

Cfg4o6& isc::dhcp::Subnet4::get4o6 ( )

inline

Returns DHCP4o6 configuration parameters.

This structure is always available. If the 4o6 is not enabled, its enabled_ field will be set to false.

Definition at line 570 of file subnet.h.

Referenced by toElement().

◆ get4o6() [2/2]

const Cfg4o6& isc::dhcp::Subnet4::get4o6 ( ) const

inline

Returns const DHCP4o6 configuration parameters.

This structure is always available. If the 4o6 is not enabled, its enabled_ field will be set to false.

Definition at line 578 of file subnet.h.

◆ getFilename()

const std::string & isc::dhcp::Subnet4::getFilename ( ) const

Returns boot file name for this subnet.

Returns: boot file name value

Definition at line 335 of file subnet.cc.

Referenced by toElement().

◆ getNextSubnet() [1/2]

Subnet4Ptr isc::dhcp::Subnet4::getNextSubnet ( const Subnet4Ptr & first_subnet ) const

Returns next subnet within shared network.

If the current subnet doesn't belong to any shared network or if the next subnet is the same as first subnet (specified in the argument) a NULL pointer is returned.

Parameters

first_subnet Pointer to the subnet from which iterations have started.

Returns: Pointer to the next subnet or NULL pointer if the next subnet is the first subnet or if the current subnet doesn't belong to a shared network.

Definition at line 263 of file subnet.cc.

References isc::dhcp::Subnet::getID(), and isc::dhcp::Subnet::getSharedNetwork().

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◆ getNextSubnet() [2/2]

Subnet4Ptr isc::dhcp::Subnet4::getNextSubnet	(	const Subnet4Ptr &	first_subnet,
		const ClientClasses &	client_classes
	)		const

Returns next subnet within shared network that matches client classes.

Parameters

first_subnet	Pointer to the subnet from which iterations have started.
client_classes	List of classes that the client belongs to. The subnets not matching the classes aren't returned by this method.

Returns: Pointer to the next subnet or NULL pointer if the next subnet is the first subnet or if the current subnet doesn't belong to a shared network.

Definition at line 274 of file subnet.cc.

References isc::dhcp::Subnet::getID(), and isc::dhcp::Subnet::getSharedNetwork().

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◆ getSiaddr()

isc::asiolink::IOAddress isc::dhcp::Subnet4::getSiaddr ( ) const

Returns siaddr for this subnet.

Returns: siaddr value

Definition at line 320 of file subnet.cc.

Referenced by toElement().

◆ getSname()

const std::string & isc::dhcp::Subnet4::getSname ( ) const

Returns server hostname for this subnet.

Returns: server hostname value

Definition at line 328 of file subnet.cc.

Referenced by toElement().

◆ parsePrefix()

std::pair< IOAddress, uint8_t > isc::dhcp::Subnet4::parsePrefix ( const std::string & prefix )

static

Converts subnet prefix to a pair of prefix/length pair.

Parameters

prefix Prefix to be parsed.

Exceptions

BadValue if provided invalid IPv4 prefix.

Definition at line 742 of file subnet.cc.

References isc_throw, and isc::dhcp::Subnet::parsePrefixCommon().

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◆ setFilename()

void isc::dhcp::Subnet4::setFilename ( const std::string & filename )

Sets boot file name for the Subnet4.

Will be used for boot file name (may be empty if not defined)

Definition at line 331 of file subnet.cc.

◆ setSiaddr()

void isc::dhcp::Subnet4::setSiaddr ( const isc::asiolink::IOAddress & siaddr )

Sets siaddr for the Subnet4.

Will be used for siaddr field (the next server) that typically is used as TFTP server. If not specified, the default value of 0.0.0.0 is used.

Definition at line 312 of file subnet.cc.

References isc_throw, and isc::asiolink::IOAddress::isV4().

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◆ setSname()

void isc::dhcp::Subnet4::setSname ( const std::string & sname )

Sets server hostname for the Subnet4.

Will be used for server hostname field (may be empty if not defined)

Definition at line 324 of file subnet.cc.

◆ toElement()

data::ElementPtr isc::dhcp::Subnet4::toElement ( ) const

virtual

Unparse a subnet object.

Returns: A pointer to unparsed subnet configuration.

Reimplemented from isc::dhcp::Network4.

Definition at line 708 of file subnet.cc.

References get4o6(), getFilename(), isc::dhcp::Subnet::getPools(), getSiaddr(), getSname(), isc::data::merge(), isc::dhcp::Cfg4o6::toElement(), isc::dhcp::Subnet::toElement(), isc::dhcp::Network4::toElement(), isc::dhcp::Subnet::toText(), and isc::dhcp::Lease::TYPE_V4.

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

Public Member Functions

Static Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ Subnet4()

Member Function Documentation

◆ clientSupported()

◆ get4o6() [1/2]

◆ get4o6() [2/2]

◆ getFilename()

◆ getNextSubnet() [1/2]

◆ getNextSubnet() [2/2]

◆ getSiaddr()

◆ getSname()

◆ parsePrefix()

◆ setFilename()

◆ setSiaddr()

◆ setSname()

◆ toElement()