org.jnetpcap.protocol.network
Class Arp

java.lang.Object
  org.jnetpcap.nio.JMemory
      org.jnetpcap.nio.JBuffer
          org.jnetpcap.packet.JHeader
              org.jnetpcap.protocol.network.Arp

All Implemented Interfaces:

JPayloadAccessor

@Header
public class Arp
extends JHeader

Address Resolution Protocol header. ARP is used to translate protocol addresses to hardware interface addresses.

Author:

Mark Bednarczyk, Sly Technologies, Inc.

Nested Class Summary

static class	Arp.HardwareType Definitions for ARP supported hardware types.
static class	Arp.OpCode Definitions for all the possible ARP operations as specified by the operation field.
static class	Arp.ProtocolType Definitions for supported protocol types.

Nested classes/interfaces inherited from class org.jnetpcap.packet.JHeader

JHeader.State

Nested classes/interfaces inherited from class org.jnetpcap.nio.JMemory

JMemory.Type

Field Summary

Fields inherited from class org.jnetpcap.packet.JHeader

annotatedHeader, BYTE, EMPTY_HEADER_ARRAY, isSubHeader, packet, state

Fields inherited from class org.jnetpcap.nio.JMemory

JNETPCAP_LIBRARY_NAME, MAX_DIRECT_MEMORY_DEFAULT, POINTER

Constructor Summary

Arp()

Method Summary

protected void	decodeHeader() Decode header.
int	hardwareType() Hardware type.
java.lang.String	hardwareTypeDescription() Hardware type description.
Arp.HardwareType	hardwareTypeEnum() Hardware type enum.
static int	headerLength(JBuffer buffer, int offset) Header length.
int	hlen() Hlen.
int	operation() Operation.
java.lang.String	operationDescription() Operation description.
Arp.OpCode	operationEnum() Operation enum.
int	plen() Plen.
int	protocolType() Protocol type.
java.lang.String	protocolTypeDescription() Protocol type description.
Arp.ProtocolType	protocolTypeEnum() Protocol type enum.
byte[]	sha() Sha.
int	shaLength() Sha length.
byte[]	spa() Spa.
int	spaLength() Spa length.
int	spaOffset() Spa offset.
byte[]	tha() Tha.
int	thaLength() Tha length.
int	thaOffset() Tha offset.
byte[]	tpa() Tpa.
int	tpaLength() Tpa length.
int	tpaOffset() Tpa offset.

Methods inherited from class org.jnetpcap.packet.JHeader

decode, getAnnotatedHeader, getDescription, getFields, getGap, getGapLength, getGapOffset, getHeader, getHeaderLength, getHeaderOffset, getId, getIndex, getLength, getName, getNextHeaderId, getNextHeaderOffset, getNicname, getOffset, getPacket, getParent, getPayload, getPayloadLength, getPayloadOffset, getPostfix, getPostfixLength, getPostfixOffset, getPrefix, getPrefixLength, getPrefixOffset, getPreviousHeaderId, getPreviousHeaderOffset, getState, getSubHeaders, hasDescription, hasGap, hasNextHeader, hasPayload, hasPostfix, hasPrefix, hasPreviousHeader, hasSubHeaders, isFragmented, isGapTruncated, isHeaderTruncated, isPayloadTruncated, isPostfixTruncated, isPrefixTruncated, peer, peer, peerPayloadTo, setPacket, setSubHeaders, sizeof, toString, transferPayloadTo, transferPayloadTo, transferPayloadTo, validateHeader

Methods inherited from class org.jnetpcap.nio.JBuffer

findUTF8String, getByte, getByteArray, getByteArray, getByteArray, getDouble, getFloat, getInt, getLong, getShort, getUByte, getUInt, getUShort, getUTF8Char, getUTF8String, getUTF8String, getUTF8String, getUTF8String, isReadonly, order, order, peer, peer, peer, peer, setByte, setByteArray, setByteBuffer, setDouble, setFloat, setInt, setLong, setShort, setShort0, setUByte, setUInt, setUShort, transferFrom, transferFrom, transferFrom, transferTo, transferTo, transferTo

Methods inherited from class org.jnetpcap.nio.JMemory

availableDirectMemory, check, cleanup, createReference, isInitialized, isJMemoryBasedOwner, isOwner, maxDirectMemory, peer, reservedDirectMemory, setSize, size, softDirectMemory, toDebugString, toHexdump, toHexdump, totalActiveAllocated, totalAllocateCalls, totalAllocated, totalAllocatedSegments0To255Bytes, totalAllocatedSegments256OrAbove, totalDeAllocateCalls, totalDeAllocated, transferFrom, transferFrom, transferFromDirect, transferOwnership, transferTo, transferTo, transferTo, transferTo, transferTo, transferTo0

Methods inherited from class java.lang.Object

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

Constructor Detail

Arp

public Arp()

Method Detail

headerLength

@HeaderLength
public static int headerLength(JBuffer buffer,
                                            int offset)

Header length.

Parameters:

buffer - the buffer

offset - the offset

Returns:

the int

hardwareTypeDescription

@Dynamic(value=DESCRIPTION)
public java.lang.String hardwareTypeDescription()

Hardware type description.

Returns:

the string

hardwareType

@Field(offset=0,
       length=16)
public int hardwareType()

Hardware type.

Returns:

the int

hardwareTypeEnum

public Arp.HardwareType hardwareTypeEnum()

Hardware type enum.

Returns:

the hardware type

protocolType

@Field(offset=16,
       format="%x",
       length=16)
public int protocolType()

Protocol type.

Returns:

the int

protocolTypeDescription

@Dynamic(value=DESCRIPTION)
public java.lang.String protocolTypeDescription()

Protocol type description.

Returns:

the string

protocolTypeEnum

public Arp.ProtocolType protocolTypeEnum()

Protocol type enum.

Returns:

the protocol type

hlen

@Field(offset=32,
       length=8,
       units="bytes",
       display="hardware size")
public int hlen()

Hlen.

Returns:

the int

plen

@Field(offset=40,
       length=8,
       units="bytes",
       display="protocol size")
public int plen()

Plen.

Returns:

the int

operationDescription

@Dynamic(value=DESCRIPTION)
public java.lang.String operationDescription()

Operation description.

Returns:

the string

operation

@Field(offset=48,
       length=16,
       display="op code")
public int operation()

Operation.

Returns:

the int

operationEnum

public Arp.OpCode operationEnum()

Operation enum.

Returns:

the op code

sha

@Field(offset=64,
       format="#mac#",
       display="sender MAC")
public byte[] sha()

Sha.

Returns:

the byte[]

shaLength

@Dynamic(value=LENGTH)
public int shaLength()

Sha length.

Returns:

the int

spa

@Field(format="#ip4#",
       display="sender IP")
public byte[] spa()

Spa.

Returns:

the byte[]

spaOffset

@Dynamic(value=OFFSET)
public int spaOffset()

Spa offset.

Returns:

the int

spaLength

@Dynamic(value=LENGTH)
public int spaLength()

Spa length.

Returns:

the int

tha

@Field(format="#mac#",
       display="target MAC")
public byte[] tha()

Tha.

Returns:

the byte[]

thaOffset

@Dynamic(value=OFFSET)
public int thaOffset()

Tha offset.

Returns:

the int

thaLength

@Dynamic(value=LENGTH)
public int thaLength()

Tha length.

Returns:

the int

tpa

@Field(format="#ip4#",
       display="target IP")
public byte[] tpa()

Tpa.

Returns:

the byte[]

tpaOffset

@Dynamic(value=OFFSET)
public int tpaOffset()

Tpa offset.

Returns:

the int

tpaLength

@Dynamic(value=LENGTH)
public int tpaLength()

Tpa length.

Returns:

the int

decodeHeader

protected void decodeHeader()

Decode header.

Overrides:

decodeHeader in class JHeader

See Also:

JHeader.decodeHeader()