https://github.com/gromnitsky/cidr.rb

an IPv4 CIDR blocks renderer w/ an offline CIDR/VLSM calculator
https://github.com/gromnitsky/cidr.rb

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an IPv4 CIDR blocks renderer w/ an offline CIDR/VLSM calculator

• Host: GitHub
• URL: https://github.com/gromnitsky/cidr.rb
• Owner: gromnitsky
• Created: 2016-11-23T07:59:37.000Z (almost 8 years ago)
• Default Branch: master
• Last Pushed: 2017-03-05T15:41:45.000Z (over 7 years ago)
• Last Synced: 2024-11-10T03:06:36.449Z (9 days ago)
• Language: JavaScript
• Homepage:
• Size: 40 KB
• Stars: 0
• Watchers: 3
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# cidr.rb

Renders IPv4 CIDR blocks in console or browser. The latter is suitable

for printing & pinning it to the wall.

Includes a simple CIDR/VLSM calculator. Works offline (except for geo

ip lookups).

Example: http://gromnitsky.users.sourceforge.net/js/cidr.rb/#/?q=128.42.5.17+%7E+128.42.5.18

## Usage

~~~

$ ruby cidr.rb

~~~

or

~~~

$ ruby cidr.rb html > index.html

$ xdg-open !$

~~~

## Library

	$ npm i cidr.rb

Address manipulations:

~~~

> cidr = require('cidr.rb')

>

> new cidr.IPv4(256)

#

> new cidr.IPv4('1.2.3.4')

#

> a = new cidr.IPv4('1.2.3.4') + 1

16909061

> new cidr.IPv4(a + 10)

#

> new cidr.IPv4('1.2.3.4') < new cidr.IPv4('1.2.3.5')

true

> new cidr.IPv4('1.2.3.4').eq(new cidr.IPv4('1.2.3.4'))

true

> new cidr.IPv4('1.2.3.4').eq('1.2.3.4')

true

> new cidr.IPv4('1.2.3.4').reverse()

'4.3.2.1.in-addr.arpa'

> new cidr.IPv4('1.2.3.4').to_a()

[ [ 0, 0, 0, 0, 0, 0, 0, 1 ],

  [ 0, 0, 0, 0, 0, 0, 1, 0 ],

  [ 0, 0, 0, 0, 0, 0, 1, 1 ],

  [ 0, 0, 0, 0, 0, 1, 0, 0 ] ]

~~~

Network:

~~~

> new cidr.Net('1.2.3.4/16')

#

> new cidr.Net('1.2.3.4', 16)

#

> new cidr.Net(new cidr.IPv4('1.2.3.4'), new cidr.IPv4('255.255.0.0'))

#

> a = new cidr.Net('1.2.3.4/16')

#

> a.eq('1.2.3.4/16')

true

> a.eq(new cidr.Net('1.2.3.4/16'))

true

> a.netaddr()

#

> a.hostaddr()

#

> a.broadcast()

#

> a.range()

[ #, # ]

> Array.from(new cidr.Net('1.2.3.4/29').to_iter())

[ #,

  #,

  #,

  #,

  #,

  # ]

> new cidr.Net('192.168.1.1/24').describe()

{ type: 'Special-purpose',

  subtype: 'Private-Use, attrs=SDF',

  link: '192.168.0.0/16' }

> new cidr.Net('192.168.1.1/24').maxhosts()

254

> new cidr.Net('192.168.1.1/28').includes('192.168.1.10')

true

> new cidr.Net('192.168.1.1/28').includes('192.168.1.40')

false

> cidr.Net.Cidr_max(new cidr.IPv4('128.42.5.17'), new cidr.IPv4('128.42.5.18'))

30

> new cidr.Net('192.168.1.0/26').vlsm([1,7,29,2,6])

{ error: null,

  tbl:

   [ { nhosts: 29, net: # },

     { nhosts: 7, net: # },

     { nhosts: 6, net: # },

     { nhosts: 2, net: # },

     { nhosts: 1, net: # } ] }

> new cidr.Net('192.0.2.1/32') < new cidr.Net('192.0.2.2/32')

true

~~~

## Bugs

* Chrome 53+, Firefox 50+ only (No Edge or Safari support).

* IPv4 only. I don't like all this 'new' IPv6 staff. I hope IPv6 fad

  will end someday! hehe

## License

MIT.