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NetAddr::CIDR

NetAddr::CIDRv4

IPv4 CIDR address - Inherits all methods from NetAddr::CIDR. Addresses of this class are composed of a 32-bit address space.

Public Class Methods

new(ip, netmask=nil, tag={}, wildcard_mask=nil, wildcard_mask_bit_flipped=false) click to toggle source 
This method performs absolutely no error checking, and is meant to be used only by
other internal methods for the sake of the speedier creation of CIDR objects.
Please consider using #create unless you know what you are doing with 100% certainty.

Arguments:

  • ip - Integer representing an ip address

  • netmask - Integer representing a binary netmask

  • tag - Hash used to append custom tags to CIDR

  • wildcard_mask - Integer representing a binary mask

  • wildcard_mask_bit_flipped - indicates whether or not the wildcard_mask is bit-flipped or not

# File lib/cidr.rb, line 239
def initialize(ip, netmask=nil, tag={}, wildcard_mask=nil, wildcard_mask_bit_flipped=false)
    @ip = ip

    if ( self.kind_of?(NetAddr::CIDRv4) )
        @version = 4
        @address_len = 32
    else
        @version = 6
        @address_len = 128
    end
    @all_f = 2**@address_len - 1

    if (netmask)
        @netmask = netmask
    else
        @netmask = 2**@address_len - 1
    end

    @network = (@ip & @netmask)
    @hostmask = @netmask ^ @all_f
    @tag = tag

    if (!wildcard_mask)
        @wildcard_mask = @netmask
    else
        @wildcard_mask = wildcard_mask
        @wildcard_mask = ~@wildcard_mask if (wildcard_mask_bit_flipped)
    end

end

Public Instance Methods

hostmask_ext() click to toggle source

Synopsis

Provide IPv4 Hostmask in extended format (y.y.y.y).

Example:
cidr = NetAddr::CIDR.create('10.1.0.0/24')
cidr.hostmask_ext => "0.0.0.255"

Arguments:

  • none

Returns:

  • String

# File lib/cidr.rb, line 2074
def hostmask_ext()
    return(NetAddr.ip_int_to_str(@hostmask, @version))
end
netmask_ext() click to toggle source

Synopsis

Provide IPv4 netmask in extended format (y.y.y.y).

Example:
cidr = NetAddr::CIDR.create('10.1.0.0/24')
cidr.netmask_ext => "255.255.255.0"

Arguments:

  • none

Returns:

  • String

# File lib/cidr.rb, line 2095
def netmask_ext()
    return(NetAddr.ip_int_to_str(@netmask, 4))
end

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