freenet.io

Class AddressIdentifier

java.lang.Object

freenet.io.AddressIdentifier

public class AddressIdentifier
extends java.lang.Object

Identifies numeric IP addresses. This class is currently capable of recognizing:

• IPv4 unabridged (a.b.c.d)
• IPv4 abridged (a.b.d or a.d)
• IPv6 unabridged (a:b:c:d:e:f:g:h)

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	AddressIdentifier.AddressType

Field Summary

Fields

Modifier and Type	Field and Description
static java.util.regex.Pattern	ipv4Pattern
static java.util.regex.Pattern	ipv6ISATAPPattern
static java.util.regex.Pattern	ipv6Pattern
static java.util.regex.Pattern	ipv6PatternWithPercentScopeID

Constructor Summary

Constructors

Constructor and Description
AddressIdentifier()

Method Summary

Modifier and Type	Method and Description
static AddressIdentifier.AddressType	getAddressType(java.lang.String address) Tries to detemine the address type of the given address.
static AddressIdentifier.AddressType	getAddressType(java.lang.String address, boolean allowIPv6PercentScopeID) Tries to detemine the address type of the given address.
static boolean	isAnISATAPIPv6Address(java.lang.String address)

Methods inherited from class java.lang.Object

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

Field Detail

ipv4Pattern

public static final java.util.regex.Pattern ipv4Pattern

ipv6Pattern

public static final java.util.regex.Pattern ipv6Pattern

ipv6PatternWithPercentScopeID

public static final java.util.regex.Pattern ipv6PatternWithPercentScopeID

ipv6ISATAPPattern

public static final java.util.regex.Pattern ipv6ISATAPPattern

Constructor Detail

AddressIdentifier

public AddressIdentifier()

Method Detail

getAddressType

public static AddressIdentifier.AddressType getAddressType(java.lang.String address)

Tries to detemine the address type of the given address. REDFLAG: IPv6 percent scope ID's could cause problems with URI's. Should not be exploitable as we don't do anything important with URI's with hosts in anyway. In particular we MUST NOT do anything with hosts from URI's from untrusted sources e.g. content filter. But then that would be completely stupid, so we don't.

Parameters:

address - The address to determine the type of

Returns:

AddressIdentifier.AddressType.OTHER if address is a hostname, AddressIdentifier.AddressType.IPv4 or AddressIdentifier.AddressType.IPv6 otherwise

getAddressType

public static AddressIdentifier.AddressType getAddressType(java.lang.String address,
                                                           boolean allowIPv6PercentScopeID)

Tries to detemine the address type of the given address.

Parameters:

address - The address to determine the type of

allowIPv6PercentScopeID - If true, match % suffixed IPv6 IP addresses

Returns:

AddressIdentifier.AddressType.OTHER if address is a hostname, AddressIdentifier.AddressType.IPv4 or AddressIdentifier.AddressType.IPv6 otherwise

isAnISATAPIPv6Address

public static boolean isAnISATAPIPv6Address(java.lang.String address)

See Also:

rfc4214