edu.utah.janos.protocols.icmp
Class ICMPHeader

java.lang.Object
  |
  +--edu.utah.janos.protocols.icmp.ICMPHeader

public class ICMPHeader

extends java.lang.Object

implements PacketSegment

The ICMPHeader is a PacketSegment for the standard ICMP header.

Field Summary

static byte	ECHO
static byte	ECHOREPLY Message types and their codes.
static int	HEADER_LENGTH Length of the header.
static byte	IREQ
static byte	IREQREPLY
static byte	MASKREPLY
static byte	MASKREQ
static byte	MAXTYPE
static byte	PARAMPROB
static byte	PARAMPROB_OPTABSENT
static byte	REDIRECT
static byte	REDIRECT_HOST
static byte	REDIRECT_NET
static byte	REDIRECT_TOSHOST
static byte	REDIRECT_TOSNET
static byte	ROUTERADVERT
static byte	ROUTERSOLICIT
static byte	SOURCEQUENCH
static byte	TIMXCEED
static byte	TIMXCEED_INTRANS
static byte	TIMXCEED_REASS
static byte	TSTAMP
static byte	TSTAMPREPLY
static byte	UNREACH
static byte	UNREACH_FILTER_PROHIB
static byte	UNREACH_HOST
static byte	UNREACH_HOST_PRECEDENCE
static byte	UNREACH_HOST_PROHIB
static byte	UNREACH_HOST_UNKNOWN
static byte	UNREACH_ISOLATED
static byte	UNREACH_NEEDFRAG
static byte	UNREACH_NET
static byte	UNREACH_NET_PROHIB
static byte	UNREACH_NET_UNKNOWN
static byte	UNREACH_PORT
static byte	UNREACH_PRECEDENCE_CUTOFF
static byte	UNREACH_PROTOCOL
static byte	UNREACH_SRCFAIL
static byte	UNREACH_TOSHOST
static byte	UNREACH_TOSNET

Constructor Summary

ICMPHeader()
Construct an ICMPHeader with zero type and code values.

ICMPHeader(byte type)

ICMPHeader(byte type, byte code)

Method Summary

boolean	equals(java.lang.Object obj)
byte	getCode()
int	getLength()
byte	getType()
int	hashCode()
int	marshal(BufferHandle bh, int offset)
static void	matchCode(DemultiplexKey dk, int offset, byte code)
static void	matchType(DemultiplexKey dk, int offset, byte type)
void	setCode(byte code)
void	setType(byte type)
java.lang.String	toString()
int	unmarshal(BufferHandle bh, int offset)

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

ECHOREPLY

public static final byte ECHOREPLY

Message types and their codes.

UNREACH

public static final byte UNREACH

UNREACH_NET

public static final byte UNREACH_NET

UNREACH_HOST

public static final byte UNREACH_HOST

UNREACH_PROTOCOL

public static final byte UNREACH_PROTOCOL

UNREACH_PORT

public static final byte UNREACH_PORT

UNREACH_NEEDFRAG

public static final byte UNREACH_NEEDFRAG

UNREACH_SRCFAIL

public static final byte UNREACH_SRCFAIL

UNREACH_NET_UNKNOWN

public static final byte UNREACH_NET_UNKNOWN

UNREACH_HOST_UNKNOWN

public static final byte UNREACH_HOST_UNKNOWN

UNREACH_ISOLATED

public static final byte UNREACH_ISOLATED

UNREACH_NET_PROHIB

public static final byte UNREACH_NET_PROHIB

UNREACH_HOST_PROHIB

public static final byte UNREACH_HOST_PROHIB

UNREACH_TOSNET

public static final byte UNREACH_TOSNET

UNREACH_TOSHOST

public static final byte UNREACH_TOSHOST

UNREACH_FILTER_PROHIB

public static final byte UNREACH_FILTER_PROHIB

UNREACH_HOST_PRECEDENCE

public static final byte UNREACH_HOST_PRECEDENCE

UNREACH_PRECEDENCE_CUTOFF

public static final byte UNREACH_PRECEDENCE_CUTOFF

SOURCEQUENCH

public static final byte SOURCEQUENCH

REDIRECT

public static final byte REDIRECT

REDIRECT_NET

public static final byte REDIRECT_NET

REDIRECT_HOST

public static final byte REDIRECT_HOST

REDIRECT_TOSNET

public static final byte REDIRECT_TOSNET

REDIRECT_TOSHOST

public static final byte REDIRECT_TOSHOST

ECHO

public static final byte ECHO

ROUTERADVERT

public static final byte ROUTERADVERT

ROUTERSOLICIT

public static final byte ROUTERSOLICIT

TIMXCEED

public static final byte TIMXCEED

TIMXCEED_INTRANS

public static final byte TIMXCEED_INTRANS

TIMXCEED_REASS

public static final byte TIMXCEED_REASS

PARAMPROB

public static final byte PARAMPROB

PARAMPROB_OPTABSENT

public static final byte PARAMPROB_OPTABSENT

TSTAMP

public static final byte TSTAMP

TSTAMPREPLY

public static final byte TSTAMPREPLY

IREQ

public static final byte IREQ

IREQREPLY

public static final byte IREQREPLY

MASKREQ

public static final byte MASKREQ

MASKREPLY

public static final byte MASKREPLY

MAXTYPE

public static final byte MAXTYPE

HEADER_LENGTH

public static final int HEADER_LENGTH

Length of the header.

Constructor Detail

ICMPHeader

public ICMPHeader(byte type,
                  byte code)

Parameters:

type - The type to give this header segment.

code - The code to give this header segment.

ICMPHeader

public ICMPHeader(byte type)

Parameters:

type - The type to give this header segment.

ICMPHeader

public ICMPHeader()

Construct an ICMPHeader with zero type and code values.

Method Detail

matchType

public static void matchType(DemultiplexKey dk,
                             int offset,
                             byte type)

Parameters:

dk - The key to add the matching data to.

offset - Offset of the IP header in the buffer.

type - The ICMP message type to match.

matchCode

public static void matchCode(DemultiplexKey dk,
                             int offset,
                             byte code)

Parameters:

dk - The key to add the matching data to.

offset - Offset of the IP header in the buffer.

code - The ICMP message code to match.

getLength

public int getLength()

Specified by:

getLength in interface PacketSegment

Tags copied from interface: PacketSegment

Returns:

The length of this packet segment.

getType

public byte getType()

setType

public void setType(byte type)

getCode

public byte getCode()

setCode

public void setCode(byte code)

marshal

public int marshal(BufferHandle bh,
                   int offset)

Specified by:

marshal in interface PacketSegment

Tags copied from interface: PacketSegment

Parameters:

bh - The buffer to marshal this packet into.

offset - The offset in the buffer to start marshalling.

unmarshal

public int unmarshal(BufferHandle bh,
                     int offset)
              throws InvalidPacketException

Specified by:

unmarshal in interface PacketSegment

Tags copied from interface: PacketSegment

Parameters:

bh - The buffer that contains the marshalled packet segments.

offset - The offset in the buffer to start unmarshalling.

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

equals

public boolean equals(java.lang.Object obj)

Overrides:

equals in class java.lang.Object

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object