com.antiaction.dns
Class DNSRecordHeader

java.lang.Object
  |
  +--com.antiaction.dns.DNSRecordHeader

All Implemented Interfaces:

java.lang.Cloneable

public class DNSRecordHeader

extends java.lang.Object

implements java.lang.Cloneable

DNS Record Header, contains the header portion of a resource record. As defined in rfc1035.

Version:

2.00

Author:

Nicholas Clarke

Field Summary

protected int	rclass Record class.
protected java.lang.String	rname Domain name associated.
protected int	rttl Record Time To Live.
protected int	rtype Record type.

Constructor Summary

DNSRecordHeader()
Instantiate and initialize a default question object.

Method Summary

byte[]	buildPacket(DNSName dnsname, int globalIdx) Build and return the record header based on the internal state.
java.lang.Object	clone() Overrides Cloneable.
void	disassemblePacket(DNSName dnsname, byte[] pDat, int pIdx, int pLen) Parses the record header part of a packet.
int	getDisassembledLen() Returns the length of the previously disassembled record header.
int	getRClass() Get the record class.
java.lang.String	getRName() Get the record name.
int	getRTTL() Get the record class.
int	getRType() Get the record type.
void	setDebug(boolean b) Toggle debug status.
void	setRClass(int rc) Set the record class.
void	setRName(java.lang.String s) Set the record name.
void	setRTTL(int rt) Set the record ttl.
void	setRType(int rt) Set the record type.
java.lang.String	toString() Returns a string representation of the internal state, mostly for debugging purposes.

Methods inherited from class java.lang.Object

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

Field Detail

rname

protected java.lang.String rname

Domain name associated.

rtype

protected int rtype

Record type.

rclass

protected int rclass

Record class.

rttl

protected int rttl

Record Time To Live.

Constructor Detail

DNSRecordHeader

public DNSRecordHeader()

Instantiate and initialize a default question object.

Method Detail

clone

public java.lang.Object clone()

Overrides Cloneable.

Overrides:

clone in class java.lang.Object

Returns:

a clone of this instance.

Throws:

OutOfMemoryError - if there is not enough memory.

See Also:

Cloneable

setDebug

public void setDebug(boolean b)

Toggle debug status.

Parameters:

b - boolean.

buildPacket

public byte[] buildPacket(DNSName dnsname,
                          int globalIdx)
                   throws DNSNameException

Build and return the record header based on the internal state.

Parameters:

dnsname - used for domain name compression in the same message.

globalIdx - current index of the message being assembled. (Domain name compression)

Returns:

the record header part of a record as a byte array.

Throws:

DNSNameException - if the domain name is invalid.

getDisassembledLen

public int getDisassembledLen()

Returns the length of the previously disassembled record header.

See Also:

disassemblePacket(DNSName, byte[], int, int)

disassemblePacket

public void disassemblePacket(DNSName dnsname,
                              byte[] pDat,
                              int pIdx,
                              int pLen)
                       throws DNSException,
                              DNSNameException

Parses the record header part of a packet.

Parameters:

dnsname - used for domain name compression in the same message.

pDat - array containing the complete packet.

pIdx - index to where in the array the record header begins.

pLen - length of the whole packet.

Throws:

DNSException - if the packet is corrupted.

DNSNameException - if the domain name is invalid.

See Also:

getDisassembledLen()

setRName

public void setRName(java.lang.String s)

Set the record name.

Parameters:

s - domain name.

getRName

public java.lang.String getRName()

Get the record name.

Returns:

domain name.

setRType

public void setRType(int rt)

Set the record type.

Parameters:

rt - record type.

getRType

public int getRType()

Get the record type.

Returns:

record type.

setRClass

public void setRClass(int rc)

Set the record class.

Parameters:

rc - record class.

getRClass

public int getRClass()

Get the record class.

Returns:

record class.

setRTTL

public void setRTTL(int rt)

Set the record ttl.

Parameters:

rt - record ttl.

getRTTL

public int getRTTL()

Get the record class.

Returns:

record class.

toString

public java.lang.String toString()

Returns a string representation of the internal state, mostly for debugging purposes.

Overrides:

toString in class java.lang.Object

Returns:

debug string.