DZone Snippets: address code

IP Catcher

amer (Amer Jazaerly) — Sat, 26 Apr 2008 08:18:04 GMT

--Howto use--
the command line:
ruby /path/to/ipcatcher.rb /path/to/filename
the program will print all the ip addresses which is inside the file.
the program doesn't print the same ip address twice. with no duplications.
Done by Amer Jazaerly.there is no copyright.
have fun ;)



#!/usr/bin/ruby



def get_ips(file)

  ips = []

  File.read(file).to_a.each do |place|

    sf = 0

    while sfn = place.index(/(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)/,sf)

      sf = sfn + 3

      ips << $&

    end

  end

  return ips

end



get_ips(ARGV[0]).uniq.each { |ip| puts ip }

Convert an integer to IP string

markpercival (Mark Percival) — Fri, 04 Apr 2008 21:30:36 GMT

Convert an integer to IP. I don't think you can do this with IPAddr, but I could be wrong

Edit, the original didn't work for low ranges.

And I was wrong about the IPAddr thing. I should have google'd better.

IPAddr.new(16909060, Socket::AF_INET).to_s

Ping a range of IP addresses

jrobertson (James Robertson) — Tue, 11 Mar 2008 09:06:19 GMT



(1..254).each {|i| puts ": found 192.168.1.#{i}" if  `ping 192.168.1.#{i} -c 1 -w 1`.match(/ttl/) }

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

Python - My External IP Address

whitetiger () — Sat, 25 Nov 2006 06:02:01 GMT

// My external ip address



import urllib



url = urllib.URLopener()

resp = url.open('http://myip.dk')

html = resp.read(114)



end = html.find("")

start = html.find("IP:") + 3



print html[start:end].strip()