Class: Xlat::Protocols::Icmp::Error

Inherits:
Base
  • Object
show all
Defined in:
lib/xlat/protocols/icmp/error.rb

Constant Summary collapse

V4_TYPE_DEST_UNREACH = 
3
V4_TYPE_TIME_EXCEEDED = 
11
V4_TYPE_PARAMETER_PROBLEM = 
12
V6_TYPE_DEST_UNREACH = 
1
V6_TYPE_PACKET_TOO_BIG = 
2
V6_TYPE_TIME_EXCEEDED = 
3
V6_TYPE_PARAMETER_PROBLEM = 
4

Constants inherited from Base

Base::V4_PROTOCOL_ID, Base::V6_PROTOCOL_ID

Instance Attribute Summary collapse

Attributes inherited from Base

#code, #type

Instance Method Summary collapse

Methods inherited from Base

#initialize, parse, recalculate_checksum

Methods included from Common

sum16be

Constructor Details

This class inherits a constructor from Xlat::Protocols::Icmp::Base

Instance Attribute Details

#payload_bytes ⇒ Object (readonly)

Returns the value of attribute payload_bytes.



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# File 'lib/xlat/protocols/icmp/error.rb', line 41

def payload_bytes
  @payload_bytes
end

#payload_bytes_length ⇒ Object (readonly)

Returns the value of attribute payload_bytes_length.



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# File 'lib/xlat/protocols/icmp/error.rb', line 43

def payload_bytes_length
  @payload_bytes_length
end

#payload_bytes_offset ⇒ Object (readonly)

Returns the value of attribute payload_bytes_offset.



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# File 'lib/xlat/protocols/icmp/error.rb', line 42

def payload_bytes_offset
  @payload_bytes_offset
end

Instance Method Details

#_parse ⇒ Object 



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# File 'lib/xlat/protocols/icmp/error.rb', line 45

def _parse
  super
  # Base.parse ensures packet.l4_bytes_length >= 8

  packet = @packet

  @payload_bytes = packet.l4_bytes
  @payload_bytes_offset = packet.l4_bytes_offset + 8
  @payload_bytes_length = packet.l4_bytes_length - 8

  self
end

#apply(cs_delta) ⇒ Object 



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# File 'lib/xlat/protocols/icmp/error.rb', line 58

def apply(cs_delta)
  # @original.apply

  # # overwrite packet image with orig packet being built
  # @packet.bytes[@packet.l4_start + 8..] = @original.bytes

  # Base.recalculate_checksum(@packet)
end