Method: NetworkScanner::Scanner#get_interface_ips

Defined in:
lib/network_scanner.rb

#get_interface_ips(interface) ⇒ Object



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# File 'lib/network_scanner.rb', line 42

def get_interface_ips(interface)
  ifconfig = `ifconfig`.split("\n\n").index_by{|x| x[/\w+/,0]}
  inet = ifconfig[interface][/inet addr:([^\s]*)/, 1].split('.')
  broadcast = ifconfig[interface][/Bcast:([^\s]*)/, 1].split('.')
  mask = ifconfig[interface][/Mask:([^\s]*)/, 1].split('.')

  start_first = inet[0].to_i & mask[0].to_i
  start_second = inet[1].to_i & mask[1].to_i
  start_third = inet[2].to_i & mask[2].to_i
  start_fourth = inet[3].to_i & mask[3].to_i

  first_range = start_first..broadcast[0].to_i
  second_range = start_second..broadcast[1].to_i
  third_range = start_third..broadcast[2].to_i
  fourth_range = start_fourth..broadcast[3].to_i
  
  @ips_to_check = []

  first_range.each do |first|
    second_range.each do |second|
      third_range.each do |third|
        fourth_range.each do |fourth|
          @ips_to_check << "#{first}.#{second}.#{third}.#{fourth}"
        end
      end
    end
  end

  puts "Checking ips in (#{first_range}).(#{second_range}).(#{third_range}).(#{fourth_range})"
  return @ips_to_check
end