org.minidns.util

Class InetAddressUtil

java.lang.Object

org.minidns.util.InetAddressUtil

public class InetAddressUtil
extends Object

Utility class for IP address manipulation and validation.

Constructor Summary

Constructors

Constructor and Description
InetAddressUtil()

Method Summary

Modifier and Type	Method and Description
static InetAddress	convertToInetAddressIfPossible(CharSequence address) Converts a CharSequence to an InetAddress if it represents a valid IP address.
static Inet4Address	ipv4From(CharSequence cs) Creates an Inet4Address from the given CharSequence.
static Inet6Address	ipv6From(CharSequence cs) Creates an Inet6Address from the given CharSequence.
static boolean	isIpAddress(CharSequence address) Checks if the given CharSequence represents a valid IP address (IPv4 or IPv6).
static boolean	isIpV4Address(CharSequence address) Checks if the given CharSequence represents a valid IPv4 address.
static boolean	isIpV6Address(CharSequence address) Checks if the given CharSequence represents a valid IPv6 address.
static DnsName	reverseIpAddressOf(Inet4Address inet4Address) Creates the reverse DNS name for the given IPv4 address.
static DnsName	reverseIpAddressOf(Inet6Address inet6Address) Creates the reverse DNS name for the given IPv6 address.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

InetAddressUtil

public InetAddressUtil()

Method Detail

convertToInetAddressIfPossible

public static InetAddress convertToInetAddressIfPossible(CharSequence address)

Converts a CharSequence to an InetAddress if it represents a valid IP address.

Parameters:

address - the CharSequence to convert

Returns:

the InetAddress if the input is a valid IP address, null otherwise

ipv4From

public static Inet4Address ipv4From(CharSequence cs)

Creates an Inet4Address from the given CharSequence.

Parameters:

cs - the CharSequence containing the IPv4 address

Returns:

the Inet4Address

Throws:

IllegalArgumentException - if the input is not a valid IPv4 address

ipv6From

public static Inet6Address ipv6From(CharSequence cs)

Creates an Inet6Address from the given CharSequence.

Parameters:

cs - the CharSequence containing the IPv6 address

Returns:

the Inet6Address

Throws:

IllegalArgumentException - if the input is not a valid IPv6 address

isIpAddress

public static boolean isIpAddress(CharSequence address)

Checks if the given CharSequence represents a valid IP address (IPv4 or IPv6).

Parameters:

address - the CharSequence to validate

Returns:

true if the input is a valid IP address, false otherwise

isIpV4Address

public static boolean isIpV4Address(CharSequence address)

Checks if the given CharSequence represents a valid IPv4 address.

Parameters:

address - the CharSequence to validate

Returns:

true if the input is a valid IPv4 address, false otherwise

isIpV6Address

public static boolean isIpV6Address(CharSequence address)

Checks if the given CharSequence represents a valid IPv6 address.

Parameters:

address - the CharSequence to validate

Returns:

true if the input is a valid IPv6 address, false otherwise

reverseIpAddressOf

public static DnsName reverseIpAddressOf(Inet4Address inet4Address)

Creates the reverse DNS name for the given IPv4 address.

Parameters:

inet4Address - the IPv4 address

Returns:

the reverse DNS name

reverseIpAddressOf

public static DnsName reverseIpAddressOf(Inet6Address inet6Address)

Creates the reverse DNS name for the given IPv6 address.

Parameters:

inet6Address - the IPv6 address

Returns:

the reverse DNS name