Module: Iptools

Defined in:
lib/ipcalc/Iptools.rb

Overview

This module contains various utilities that are used by all classes that manipulate IP addresses.

Class Method Summary collapse

Class Method Details

.dots_to_i(in_dots) ⇒ Object

Convert an array that represents an IP address into an integer. Example: [173, 85, 245, 65] => 2908091713.

in_dots

the array that will be converted into an integer (ex: [192, 168, 0, 10]).

The method returns an integer.



18
19
20
21
22
23
24
25
26
 
# File 'lib/ipcalc/Iptools.rb', line 18

def self.dots_to_i(in_dots)
  bint = 0;
  rdx  = 1; 
  in_dots.reverse.each do |dot|
    bint += dot * rdx
    rdx *= 256
  end
  bint    
end

.i_to_dots(in_int, in_v = 4) ⇒ Object

Convert an integer that represents an IP address into an array. Example: 2908091713 => [173, 85, 245, 65]

in_int

Integer to convert.

in_v

IP version (should be 4 or 6).

The method returns an array (with 4 or 6 elements).

Raises:

  • (RuntimeError) 


36
37
38
39
40
41
42
43
44
45
 
# File 'lib/ipcalc/Iptools.rb', line 36

def self.i_to_dots(in_int, in_v=4)
  res = [];
  raise RuntimeError, "Invalid IP version #{in_v} (should be 4 or 6)" if (in_v != 4 && in_v != 6) 
  in_v.times do
    r      = in_int % 256;
    in_int = (in_int - r) / 256;
    res.unshift(r.to_s);
  end
  res.join('.');
end