TSDuck v3.40-4034
MPEG Transport Stream Toolkit
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ts::IPAddressMask Class Reference

A combination of IP address and network mask or prefix. More...

#include <tsIPAddressMask.h>

Inheritance diagram for ts::IPAddressMask:
Collaboration diagram for ts::IPAddressMask:

Public Types

using Port = uint16_t
 The concept of port is used by TCP and UDP over IP networks.
 

Public Member Functions

 IPAddressMask (const IPAddress &addr, const IPAddress &mask)
 Constructor from a network mask.
 
 IPAddressMask (const IPAddress &addr=IPAddress(), size_t prefix=0)
 Default constructor.
 
uint32_t address4 () const
 Get the IPv4 address as a 32-bit integer value in host byte order.
 
ByteBlock address6 () const
 Get the IPv6 address as a byte block.
 
virtual size_t binarySize () const override
 Get the maximum binary size in bytes for an address of that class.
 
IPAddress broadcastAddress () const
 Get the associated broadcast address (IPv4 only).
 
virtual void clear ()
 Clear the object, address and port if there is any.
 
virtual void clearAddress () override
 Clear the address field.
 
virtual void clearPort ()
 Clear the port.
 
bool convert (IP gen)
 Convert an IP address to another generation, when possible.
 
virtual const UCharfamilyName () const override
 Get a human-readable family name for an address of that class.
 
IP generation () const
 Get the current generation of IP addresses.
 
size_t getAddress (::sockaddr_storage &a, Port port) const
 Copy the address into a system "struct sockaddr_storage" structure (socket API).
 
virtual size_t getAddress (void *addr, size_t size) const override
 Get the network address as binary data.
 
bool getAddress4 (::in_addr &a) const
 Copy the IPv4 address into a system "struct in_addr" structure (socket API).
 
bool getAddress4 (::sockaddr_in &a, Port port) const
 Copy the IPv4 address into a system "struct sockaddr_in" structure (socket API).
 
bool getAddress6 (::in6_addr &a) const
 Copy the IPv6 address into a system "struct in6_addr" structure (socket API).
 
bool getAddress6 (::sockaddr_in6 &a, Port port) const
 Copy the IPv6 address into a system "struct sockaddr_in6" structure (socket API).
 
virtual bool hasAddress () const override
 Check if this object is set to a valid address.
 
virtual bool hasPort () const
 Check if a port is set.
 
uint16_t hexlet6 (size_t i) const
 Get one of the 16-bit hexlets in the IPv6 address.
 
uint64_t interfaceIdentifier6 () const
 Get the IPv6 interface identifier (64 least significant bits) of the IPv6 address.
 
bool isIPv4Mapped () const
 Check if the address is an IPv6 address which is mapped to an IPv4 one.
 
virtual bool isMulticast () const override
 Check if the address is a multicast address.
 
bool isSSM () const
 Check if the address is a source specific multicast (SSM) address.
 
IPAddress mask () const
 Get the associated address mask.
 
bool match (const IPAddress &other) const
 Check if this address "matches" another one.
 
uint64_t networkPrefix6 () const
 Get the IPv6 network prefix (64 most significant bits) of the IPv6 address.
 
bool operator< (const IPAddress &other) const
 Comparison "less than" operator.
 
bool operator== (const IPAddress &other) const
 Equality operator.
 
virtual Port port () const
 Get the port if there is one.
 
size_t prefixSize () const
 Get the prefix size or network mask size in bits.
 
virtual bool resolve (const UString &name, Report &report) override
 Decode a string containing a network address in family-specific format.
 
virtual bool resolve (const UString &name, Report &report, IP preferred)
 Decode a string containing a network address in family-specific format.
 
bool setAddress (const ::sockaddr &a)
 Set the IP address from a system "struct sockaddr" structure (IPv4 or IPv6).
 
bool setAddress (const ::sockaddr_in &a)
 Set the IPv4 address from a system "struct sockaddr_in" structure.
 
bool setAddress (const ::sockaddr_in6 &a)
 Set the IPv6 address from a system "struct sockaddr_in6" structure.
 
bool setAddress (const ::sockaddr_storage &a)
 Set the IP address from a system "struct sockaddr_storage" structure (IPv4 or IPv6).
 
bool setAddress (const ByteBlock &bb)
 Set the IP address from an address in binary format.
 
void setAddress (const IPAddress &other)
 Set the IP address from another IPAddress object.
 
virtual bool setAddress (const void *addr, size_t size) override
 Set the network address from binary data.
 
void setAddress4 (const ::in_addr &a)
 Set the IPv4 address from a system "struct in_addr" structure.
 
void setAddress4 (uint32_t addr)
 Set the IP address from an IPv4 address as a 32-bit integer value in host byte order.
 
void setAddress4 (uint8_t b1, uint8_t b2, uint8_t b3, uint8_t b4)
 Set the IP address from 4 bytes (classical IPv4 notation).
 
void setAddress6 (const ::in6_addr &a)
 Set the IPv6 address from a system "struct in6_addr" structure.
 
void setAddress6 (uint16_t h1, uint16_t h2, uint16_t h3, uint16_t h4, uint16_t h5, uint16_t h6, uint16_t h7, uint16_t h8)
 Set the IP address from an IPv6 address as 8 hexlets.
 
void setAddress6 (uint64_t net, uint64_t ifid)
 Set the IP address from an IPv6 address as network prefix and interface identifier.
 
void setMask (const IPAddress &mask)
 Set a new network mask.
 
virtual void setPort (Port port)
 Set the port.
 
void setPrefixSize (size_t prefix)
 Set a new prefix size.
 
virtual UString toFullString () const override
 Convert to a string object in numeric format without the default compaction.
 
virtual UString toString () const override
 Convert to a string object.
 

Static Public Member Functions

static size_t AddressBits (IP gen)
 Get the address size in bits for a given generation of IP protocols.
 
static const IPAddressAnyAddress (IP gen)
 Get the "any address" template for a given generation of IP protocols.
 
static size_t ComputePrefixSize (const IPAddress &mask)
 Compute the size of a prefix from a network mask.
 
static const IPAddressLocalHost (IP gen)
 Get the "local host" address for a given generation of IP protocols.
 
static bool ResolveAllAddresses (IPAddressVector &addresses, const UString &name, Report &report, IP gen=IP::Any)
 Decode a host name and get all possible addresses for that host.
 

Static Public Attributes

static const IPAddress AnyAddress4
 Wildcard value for "any IPv4 address".
 
static const IPAddress AnyAddress6
 Wildcard value for "any IPv6 address".
 
static constexpr Port AnyPort = 0
 Wildcard integer value for "any port" or "no port".
 
static constexpr size_t BITS4 = 32
 Size in bits of an IPv4 address.
 
static constexpr size_t BITS6 = 128
 Size in bits of an IPv6 address.
 
static constexpr size_t BYTES4 = 4
 Size in bytes of an IPv4 address.
 
static constexpr size_t BYTES6 = 16
 Size in bytes of an IPv6 address.
 
static const IPAddress LocalHost4
 Local host IPv4 address ("localhost").
 
static const IPAddress LocalHost6
 Local host IPv6 address (::1, "localhost").
 

Detailed Description

A combination of IP address and network mask or prefix.

Constructor & Destructor Documentation

◆ IPAddressMask() [1/2]

ts::IPAddressMask::IPAddressMask ( const IPAddress addr = IPAddress(),
size_t  prefix = 0 
)

Default constructor.

Parameters
[in]addrIP address.
[in]prefixPrefix size in bits.

◆ IPAddressMask() [2/2]

ts::IPAddressMask::IPAddressMask ( const IPAddress addr,
const IPAddress mask 
)

Constructor from a network mask.

Parameters
[in]addrIP address.
[in]maskNetwork mask.

Member Function Documentation

◆ prefixSize()

size_t ts::IPAddressMask::prefixSize ( ) const

Get the prefix size or network mask size in bits.

Returns
The prefix size (e.g. 24 for mask 255.255.255.0).

◆ setPrefixSize()

void ts::IPAddressMask::setPrefixSize ( size_t  prefix)

Set a new prefix size.

Parameters
[in]prefixPrefix size in bits.

◆ setMask()

void ts::IPAddressMask::setMask ( const IPAddress mask)

Set a new network mask.

Parameters
[in]maskNetwork mask.

◆ mask()

IPAddress ts::IPAddressMask::mask ( ) const

Get the associated address mask.

Returns
The associated address mask.

◆ broadcastAddress()

IPAddress ts::IPAddressMask::broadcastAddress ( ) const

Get the associated broadcast address (IPv4 only).

Returns
The associated broadcast address. With IPv6 return AnyAddress6.

◆ toFullString()

virtual UString ts::IPAddressMask::toFullString ( ) const
overridevirtual

Convert to a string object in numeric format without the default compaction.

The method toString() (inherited from StringifyInterface) returns a default representation of the string, with possible compaction of omitted defaults. This method returns a complete version of the address representation. The default implementation returns the same value as toString().

Returns
This object, converted as a string.

Reimplemented from ts::IPAddress.

◆ toString()

virtual UString ts::IPAddressMask::toString ( ) const
overridevirtual

Convert to a string object.

Returns
This object, converted as a string.

Reimplemented from ts::IPAddress.

◆ ComputePrefixSize()

static size_t ts::IPAddressMask::ComputePrefixSize ( const IPAddress mask)
static

Compute the size of a prefix from a network mask.

Parameters
[in]maskNetwork mask.
Returns
The prefix size in bits.

◆ AnyAddress()

static const IPAddress & ts::IPAddress::AnyAddress ( IP  gen)
inlinestaticinherited

Get the "any address" template for a given generation of IP protocols.

Parameters
[in]genGeneration of IP protocols.
Returns
A constant reference to the corresponding "any address".

◆ LocalHost()

static const IPAddress & ts::IPAddress::LocalHost ( IP  gen)
inlinestaticinherited

Get the "local host" address for a given generation of IP protocols.

Parameters
[in]genGeneration of IP protocols.
Returns
A constant reference to the corresponding "local host" address.

◆ AddressBits()

static size_t ts::IPAddress::AddressBits ( IP  gen)
inlinestaticinherited

Get the address size in bits for a given generation of IP protocols.

Parameters
[in]genGeneration of IP protocols.
Returns
Address size in bits.

◆ operator==()

bool ts::IPAddress::operator== ( const IPAddress other) const
inherited

Equality operator.

Parameters
[in]otherAnother instance to compare with.
Returns
True if both object contains the same address, false otherwise.

◆ operator<()

bool ts::IPAddress::operator< ( const IPAddress other) const
inherited

Comparison "less than" operator.

It does not really makes sense. Only defined to allow usage in containers.

Parameters
[in]otherOther instance to compare.
Returns
True if this instance is less than to other.

◆ match()

bool ts::IPAddress::match ( const IPAddress other) const
inherited

Check if this address "matches" another one.

Parameters
[in]otherAnother instance to compare.
Returns
False if this and other addresses are both specified and are different. True otherwise.

◆ generation()

IP ts::IPAddress::generation ( ) const
inlineinherited

Get the current generation of IP addresses.

Returns
The IP generation of the address currently in this instance. Never IP::Any.

◆ isIPv4Mapped()

bool ts::IPAddress::isIPv4Mapped ( ) const
inherited

Check if the address is an IPv6 address which is mapped to an IPv4 one.

Returns
true if the address is an IPv6 address which is mapped to an IPv4 one.

◆ convert()

bool ts::IPAddress::convert ( IP  gen)
inherited

Convert an IP address to another generation, when possible.

Parameters
[in]genNew IP generation to apply. If gen is IP::Any or the same as the current generation, return true. A conversion from IPv4 to IPv6 always works (IPv4-mapped address). The conversion of an IPv6 address into IPv4 is only possible if it is an IPv4-mapped address. For convenience, the IPv4 and IPv6 ampty and loopback addressses are converted to each other.
Returns
True if the conversion was successful, false if the conversion was no possible.

◆ binarySize()

virtual size_t ts::IPAddress::binarySize ( ) const
overridevirtualinherited

Get the maximum binary size in bytes for an address of that class.

Returns
The maximum binary size in bytes for an address of that class.

Implements ts::AbstractNetworkAddress.

◆ familyName()

virtual const UChar * ts::IPAddress::familyName ( ) const
overridevirtualinherited

Get a human-readable family name for an address of that class.

This is typically something like "IPv4" or "IPv6".

Returns
A human-readable family name for an address of that class.

Implements ts::AbstractNetworkAddress.

◆ hasAddress()

virtual bool ts::IPAddress::hasAddress ( ) const
overridevirtualinherited

Check if this object is set to a valid address.

Returns
True if this object is set to a valid address, false otherwise.

Implements ts::AbstractNetworkAddress.

◆ getAddress() [1/2]

virtual size_t ts::IPAddress::getAddress ( void *  addr,
size_t  size 
) const
overridevirtualinherited

Get the network address as binary data.

Parameters
[out]addrAddress of binary buffer to receive binary data.
[in]sizeSize in bytes of buffer.
Returns
Number of copied bytes on success, zero on error (data too short).

Implements ts::AbstractNetworkAddress.

◆ getAddress() [2/2]

size_t ts::IPAddress::getAddress ( ::sockaddr_storage &  a,
Port  port 
) const
inherited

Copy the address into a system "struct sockaddr_storage" structure (socket API).

Note: the structure "sockaddr" is deprecated because it cannot hold an IPv6 socket address. The structure "sockaddr_storage" should be used instead.

Parameters
[out]aA system "struct sockaddr_storage" structure. This type of structure is large enough to hold a structure sockaddr_in or sockaddr_in6.
[in]portPort number for the socket address.
Returns
Actual number of bytes used in the structure "sockaddr_storage".

◆ setAddress() [1/7]

virtual bool ts::IPAddress::setAddress ( const void *  addr,
size_t  size 
)
overridevirtualinherited

Set the network address from binary data.

Parameters
[in]addrAddress of binary data.
[in]sizeSize in bytes of binary data.
Returns
True on success, false on error (incorrect data size).

Implements ts::AbstractNetworkAddress.

◆ setAddress() [2/7]

void ts::IPAddress::setAddress ( const IPAddress other)
inherited

Set the IP address from another IPAddress object.

Useful for subclasses to assign the address part only.

Parameters
[in]otherAnother IP address.

◆ setAddress() [3/7]

bool ts::IPAddress::setAddress ( const ByteBlock bb)
inlineinherited

Set the IP address from an address in binary format.

Useful for subclasses to assign the address part only.

Parameters
[in]bbByte block containing the address in binary format. If the size is 4, this is an IPv4 address. If the size is 16, this is an IPv6 address. For all other sizes, the address is AnyAddress4.
Returns
True on success, false on error (incorrect data size).

◆ setAddress() [4/7]

bool ts::IPAddress::setAddress ( const ::sockaddr &  a)
inherited

Set the IP address from a system "struct sockaddr" structure (IPv4 or IPv6).

Parameters
[in]aA system "struct sockaddr" structure. Note: the structure "sockaddr" is deprecated because it cannot hold an IPv6 socket address. The structure "sockaddr_storage" should be used instead.
Returns
True on success, false on error (incorrect family type).

◆ setAddress() [5/7]

bool ts::IPAddress::setAddress ( const ::sockaddr_storage &  a)
inlineinherited

Set the IP address from a system "struct sockaddr_storage" structure (IPv4 or IPv6).

Parameters
[in]aA system "struct sockaddr_storage" structure.
Returns
True on success, false on error (incorrect family type).

◆ setAddress() [6/7]

bool ts::IPAddress::setAddress ( const ::sockaddr_in &  a)
inlineinherited

Set the IPv4 address from a system "struct sockaddr_in" structure.

Parameters
[in]aA system "struct sockaddr_in" structure.
Returns
True on success, false on error (incorrect family type).

◆ setAddress() [7/7]

bool ts::IPAddress::setAddress ( const ::sockaddr_in6 &  a)
inlineinherited

Set the IPv6 address from a system "struct sockaddr_in6" structure.

Parameters
[in]aA system "struct sockaddr_in6" structure.
Returns
True on success, false on error (incorrect family type).

◆ clearAddress()

virtual void ts::IPAddress::clearAddress ( )
overridevirtualinherited

Clear the address field.

Implements ts::AbstractNetworkAddress.

◆ isMulticast()

virtual bool ts::IPAddress::isMulticast ( ) const
overridevirtualinherited

Check if the address is a multicast address.

Returns
True if the address is a multicast address, false otherwise.

Implements ts::AbstractNetworkAddress.

◆ resolve() [1/2]

virtual bool ts::IPAddress::resolve ( const UString name,
Report report 
)
overridevirtualinherited

Decode a string containing a network address in family-specific format.

Parameters
[in]nameA string containing either a host name or a numerical representation of the address.
[in]reportWhere to report errors.
Returns
True if name was successfully resolved, false otherwise. In the later case, the address is invalidated.

Implements ts::AbstractNetworkAddress.

Reimplemented in ts::IPSocketAddress.

◆ resolve() [2/2]

virtual bool ts::IPAddress::resolve ( const UString name,
Report report,
IP  preferred 
)
virtualinherited

Decode a string containing a network address in family-specific format.

Parameters
[in]nameA string containing either a host name or a numerical representation of the address.
[in]reportWhere to report errors.
[in]preferredPreferred IP generation of the returned address. Return the first availabale address by default. If no address of that generation is available, return one from the other generation if available.
Returns
True if name was successfully resolved, false otherwise. In the later case, the address is invalidated.

Reimplemented in ts::IPSocketAddress.

◆ isSSM()

bool ts::IPAddress::isSSM ( ) const
inherited

Check if the address is a source specific multicast (SSM) address.

Returns
True if the address is an SSM address, false otherwise.

◆ address4()

uint32_t ts::IPAddress::address4 ( ) const
inlineinherited

Get the IPv4 address as a 32-bit integer value in host byte order.

Returns
The IPv4 address as a 32-bit integer value in host byte order or zero if not an IPv4 address.

◆ address6()

ByteBlock ts::IPAddress::address6 ( ) const
inherited

Get the IPv6 address as a byte block.

Returns
Byte block containing the IPv6 bytes.

◆ networkPrefix6()

uint64_t ts::IPAddress::networkPrefix6 ( ) const
inherited

Get the IPv6 network prefix (64 most significant bits) of the IPv6 address.

Returns
The network prefix (64 most significant bits) of the IPv6 address.

◆ interfaceIdentifier6()

uint64_t ts::IPAddress::interfaceIdentifier6 ( ) const
inherited

Get the IPv6 interface identifier (64 least significant bits) of the IPv6 address.

Returns
The interface identifier (64 least significant bits) of the IPv6 address.

◆ hexlet6()

uint16_t ts::IPAddress::hexlet6 ( size_t  i) const
inherited

Get one of the 16-bit hexlets in the IPv6 address.

Parameters
[in]iHexlet index, from 0 to 7.
Returns
The corresponding hexlet or zero if i is out of range.

◆ setAddress4() [1/3]

void ts::IPAddress::setAddress4 ( uint32_t  addr)
inherited

Set the IP address from an IPv4 address as a 32-bit integer value in host byte order.

Parameters
[in]addrThe IP v4 address as an integer in host byte order.

◆ setAddress4() [2/3]

void ts::IPAddress::setAddress4 ( uint8_t  b1,
uint8_t  b2,
uint8_t  b3,
uint8_t  b4 
)
inherited

Set the IP address from 4 bytes (classical IPv4 notation).

Parameters
[in]b1First address byte.
[in]b2Second address byte.
[in]b3Third address byte.
[in]b4Fourth address byte.

◆ setAddress4() [3/3]

void ts::IPAddress::setAddress4 ( const ::in_addr &  a)
inherited

Set the IPv4 address from a system "struct in_addr" structure.

Parameters
[in]aA system "struct in_addr" structure.

◆ setAddress6() [1/3]

void ts::IPAddress::setAddress6 ( uint16_t  h1,
uint16_t  h2,
uint16_t  h3,
uint16_t  h4,
uint16_t  h5,
uint16_t  h6,
uint16_t  h7,
uint16_t  h8 
)
inherited

Set the IP address from an IPv6 address as 8 hexlets.

Parameters
[in]h1First address hexlet.
[in]h22nd address hexlet.
[in]h33rd address hexlet.
[in]h44th address hexlet.
[in]h55th address hexlet.
[in]h66th address hexlet.
[in]h77th address hexlet.
[in]h88th address hexlet.

◆ setAddress6() [2/3]

void ts::IPAddress::setAddress6 ( uint64_t  net,
uint64_t  ifid 
)
inherited

Set the IP address from an IPv6 address as network prefix and interface identifier.

Parameters
[in]netNetwork prefix.
[in]ifidInterface identifier.

◆ setAddress6() [3/3]

void ts::IPAddress::setAddress6 ( const ::in6_addr &  a)
inherited

Set the IPv6 address from a system "struct in6_addr" structure.

Parameters
[in]aA system "struct in6_addr" structure.

◆ getAddress4() [1/2]

bool ts::IPAddress::getAddress4 ( ::sockaddr_in &  a,
Port  port 
) const
inherited

Copy the IPv4 address into a system "struct sockaddr_in" structure (socket API).

Parameters
[out]aA system "struct sockaddr_in" structure.
[in]portPort number for the socket address.
Returns
True on success, false on error (incorrect family type).

◆ getAddress4() [2/2]

bool ts::IPAddress::getAddress4 ( ::in_addr &  a) const
inherited

Copy the IPv4 address into a system "struct in_addr" structure (socket API).

Parameters
[out]aA system "struct in_addr" structure.
Returns
True on success, false on error (incorrect family type).

◆ getAddress6() [1/2]

bool ts::IPAddress::getAddress6 ( ::sockaddr_in6 &  a,
Port  port 
) const
inherited

Copy the IPv6 address into a system "struct sockaddr_in6" structure (socket API).

Parameters
[out]aA system "struct sockaddr_in6" structure.
[in]portPort number for the socket address.
Returns
True on success, false on error (incorrect family type).

◆ getAddress6() [2/2]

bool ts::IPAddress::getAddress6 ( ::in6_addr &  a) const
inherited

Copy the IPv6 address into a system "struct in6_addr" structure (socket API).

Parameters
[out]aA system "struct in6_addr" structure.
Returns
True on success, false on error (incorrect family type).

◆ ResolveAllAddresses()

static bool ts::IPAddress::ResolveAllAddresses ( IPAddressVector addresses,
const UString name,
Report report,
IP  gen = IP::Any 
)
staticinherited

Decode a host name and get all possible addresses for that host.

Parameters
[out]addressesList of possible addresses for name. If name is a valid numerical addresse, only this one is returned.
[in]nameA string containing either a host name or a numerical representation of the address.
[in,out]reportWhere to report errors.
[in]genIP generation of the returned address. Can be used to restrict the result to IPv4 or IPv6 addresses. Return all by default.
Returns
True if name was successfully resolved, false otherwise.

◆ hasPort()

virtual bool ts::AbstractNetworkAddress::hasPort ( ) const
virtualinherited

Check if a port is set.

Returns
True if port is set.

◆ port()

virtual Port ts::AbstractNetworkAddress::port ( ) const
virtualinherited

Get the port if there is one.

The default implementation returns AnyPort.

Returns
The port number or AnyPort if there is none.

Reimplemented in ts::IPSocketAddress.

◆ setPort()

virtual void ts::AbstractNetworkAddress::setPort ( Port  port)
virtualinherited

Set the port.

The default implementation does nothing.

Parameters
[in]portThe port number as an integer in host byte order.

Reimplemented in ts::IPSocketAddress.

◆ clearPort()

virtual void ts::AbstractNetworkAddress::clearPort ( )
virtualinherited

Clear the port.

The default implementatio sets the port to AnyPort


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