Class: DHCP::OptStaticRoutes

Inherits:
OptListFixedData show all
Defined in:
lib/dhcp/options.rb

Overview

Class for DHCP option 33 (static routes) - Use option 121 instead if possible WARNING: Option 33 can only handle class A, B, or C networks, not classless networks with an arbitrary netmask.

Instance Attribute Summary

Attributes inherited from OptData

#data

Attributes inherited from Opt

#name, #opt

Instance Method Summary collapse

Methods inherited from OptListFixedData

#split_data

Methods inherited from OptListData

#append, #data=, #each, #get, #initialize, #set, #size, #split_data

Methods inherited from OptData

#get, #initialize, #opt_header, #set, #to_opt

Methods inherited from Opt

#initialize, #opt_header, #to_opt

Constructor Details

This class inherits a constructor from DHCP::OptListData

Instance Method Details

#bin_to_data(data) ⇒ Object 



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# File 'lib/dhcp/options.rb', line 382

def bin_to_data(data)
  [IPAddress::IPv4::parse_classful_data(data[0,4]).net.to_string,  IPAddress::IPv4::parse_data(data[4,4]).to_s]
end

#data_to_bin(data) ⇒ Object 



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# File 'lib/dhcp/options.rb', line 367

def data_to_bin(data)
  raise "Invalid static route" unless data.is_a?(Array) && data.size == 2
  net, gateway = *data
  net = IPAddress::IPv4.new(net)
  raise "Invalid classful static route network" unless net.network?
  raise "Invalid classful static route network" unless (
    (net.a? && net.prefix == 8 ) ||
    (net.b? && net.prefix == 16) ||
    (net.c? && net.prefix == 24)
  )
  gateway = IPAddress::IPv4.new("#{gateway}/#{net.prefix}")
  raise "Invalid classful static route gateway" unless gateway.member?(net)
  net.data + gateway.data
end

#is_list?(list) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/dhcp/options.rb', line 354

def is_list?(list)
  raise "Invalid route list/entry" unless list.is_a?(Array)
  if list.size == 2
    return false if list[0].is_a?(String) && list[1].is_a?(String)
    return true  if list[0].is_a?(Array)  && list[1].is_a?(Array) 
    raise "Invalid route list/entry"
  end
  list.each do |item|
    raise "Invalid route list" unless item.is_a?(Array) && item[0].is_a?(String) && item[1].is_a?(String)
  end
  return true
end

#to_s ⇒ Object 



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# File 'lib/dhcp/options.rb', line 386

def to_s
  opt_header + '=[' + map{|i| i[0] + '=>' + i[1]}.join(',') + ']'
end