Format IPv4 address in octal binary format and vice versa (Ruby / Rails)

MichaelWhi (Michael Whittaker) — Fri, 28 Dec 2007 14:12:12 GMT

Format an IPv4 address like 192.168.1.1 in dotted binary format like 11000000.10101000.00000001.00000001
You also need this class: http://snippets.dzone.com/posts/show/2472
For Rails: Put this in your controller!



  # convert a dotted decimal IPv4 address to dotted binary format

  def ipv4_to_binary(ipv4addr)

    ia = ipv4addr.to_s.split('.')

    if ia.size != 4

      return "0.0.0.0"

    end

    output = ""

    i = 1

    for octett in ia

      output = output + octett.to_i.to_s(2).using("########","0",true)

      if i < 4

        output = output + "."

      end

      i += 1

    end

    return output

  end

  

  

  # convert a IPv4 adress in binary dotted format to a dotted IPv4 address

  def binary_to_ipv4(ipv4addr)

    ia = ipv4addr.to_s.split('.')

    if ia.size != 4

      return "0.0.0.0"

    end

    output = ""

    i = 1

    for octett in ia

      output = output + octett.to_s.to_i(2).to_s

      if i < 4

        output = output + "."

      end

      i += 1

    end

    return output

  end

DZone Snippets: ip address code

Format IPv4 address in octal binary format and vice versa (Ruby / Rails)