IP Address Toolkit Library

This is a tool library that implements IPv4 adn IPv6 address operations, providing functions like IP address conversion, validation, subnet calculation, etc. It can facilitate various IP address processing tasks in network programming.

Features

• IP address conversion: string to integer and vice versa
• IP address validation: check address validity
• Subnet check: determine if address are in the same subnet
• CIDR parsing: get address range info
• Subnet mask: generate mask from prefix
• IP range: represent address range
• And other functions

Installation

# Using npm
$ npm install --save ip-toolkit
# or Using yarn
$ yarn install --save ip-toolkit

IPv4 Usage

const { IP } = require('ip-toolkit')

// Convert IPv4 or IPv6 address string to number 
IP.ip2long("192.168.0.1") // 3232235521
IP.ip2long('::ffff:ffff')   // 4294967295n 

// Convert IPv4 or IPv6 number to address string
IP.long2ip(3232235521) // "192.168.0.1"
IP.long2ip(4294967295n)   // '::ffff:ffff' 

// Verify if the IPv4 or IPv6 address is valid
IP.isValidIP('172.16.1.1') // true
IP.isValidIP('f16c:f7ec::36b8') // true

// Verify if the IPv4 or IPv6 CIDR address is valid
IP.isCIDR('172.16.1.1/0') // true
IP.isCIDR('ff::99:ff/64') // true

// Verify if a set of IPv4 or IPv6 CIDR ranges have conflicts
IP.isConflict(['192.168.1.0/24', '192.168.0.0/16'])  // true
IP.isConflict(['2001:1db8::/32', '2001:1db8::/16'])  // true

//  Verify if the IPv4 or IPv6 address is within the CIDR range
IP.contains('192.168.1.0/24', '192.168.1.5')    // true
IP.contains('2001:db8::1/64', '2001:db8::11')    // true


const { IPv4 } = require('ip-toolkit')

// Convert IP address string to number 
IPv4.ip2long("192.168.0.1") // 3232235521
IPv4.ip2long("192.168.0.257") // false

// Convert IP number to address string
IPv4.long2ip(3232235521) // 192.168.0.1
IPv4.long2ip(-1) // false

// Verify if the IP address is valid
IPv4.isValidIP('172.16.1.1') // true
IPv4.isValidIP('172.16.01.1') // true
IPv4.isValidIP('172.16.01.1', {strict: true}) // false

// Verify if the CIDR address is valid
IPv4.isCIDR('172.16.1.1/0') // true
IPv4.isCIDR('172.16.0.1/32') // true
IPv4.isCIDR('172.16.1.1/33') // false
IPv4.isCIDR('172.16.01.1/32') // false

// Verify if two IP address are equal
IPv4.isEqual('192.168.0.1', 3232235521)  // true
IPv4.isEqual('192.168.1.10', '192.168.1.10') // true

//  Verify if the IP address is within the CIDR range
IPv4.contains('192.168.1.0/24', '192.168.1.5')    // true
IPv4.contains('192.168.1.0/24', '192.168.2.5')    // false

// Verify if an IP address is private 
IPv4.isPrivate('192.168.0.1') // returns true
IPv4.isPrivate('114.114.114.114') // returns false 

// Verify if the subnet mask is valid
IPv4.isValidMask(24) // true
IPv4.isValidMask('255.255.255.0') // true 
IPv4.isValidMask('255.255.256.0') // false

// Verify if a set of CIDR ranges have conflicts
IPv4.isConflict(['192.168.1.0/24', '192.168.0.0/16'])  // true
IPv4.isConflict(['192.168.1.0/24', '192.168.2.0/24'])  // false
IPv4.isConflict(['192.168.1.0/24', '192.168.2.0/24', '192.168.3.0/16'])  // true
IPv4.isConflict(['192.168.1.0/24', '192.168.2.0/24', '192.168.3.0/24'])  // false

// Convert IPv4 address to binary and hex
IPv4.toBinHex('172.16.0.1');
// {
//   hex: '0xac100001',
//   decimal: 2886729729,
//   binary: '10101100000100000000000000000001' 
// }

// Converts IPv4 address to IPv6 format
IPv4.toIPv6Format('192.168.1.1');
// {
//   mapped: '::ffff:192.168.1.1',  
//   comperssed: "::ffff:c0a8:101"
//   expanded: '0000:0000:0000:0000:0000:ffff:c0a8:0101',
// }

// Calculate the inverse mask of a subnet mask
IPv4.toInverseMask(24);  // '0.0.0.255'
IPv4.toInverseMask(16);  // '0.0.255.255'
IPv4.toInverseMask('255.255.255.0');  // '0.0.0.255'
IPv4.toInverseMask('255.255.0.0');  // '0.0.255.255'

// Convert subnet mask string to mask length number
IPv4.toMaskLength('255.255.255.0') // 24 
IPv4.toMaskLength('255.255.256.0') // false

// Convert mask length to subnet mask string
IPv4.toSubnetMask(0) // 0.0.0.0
IPv4.toSubnetMask(8) // 255.0.0.0
IPv4.toSubnetMask(16) // 255.255.0.0
IPv4.toSubnetMask(24) // 255.255.255.0

// Verify if two IP address are on the same subnet
IPv4.isSameSubnet('192.168.1.10', '192.168.1.100', '255.255.255.0'); // true
IPv4.isSameSubnet('192.168.1.10', '192.168.2.100', '255.255.255.0'); // true

// Parse IPv4 CIDR address to get address range info
IPv4.parseCIDR('192.168.0.1/24')
// {
//   ipCount: 256,
//   usableCount: 254,
//   cidrMask: 24,
//   subnetMask: '255.255.255.0',
//   firstHost: '192.168.0.1',
//   lastHost: '192.168.0.254',
//   networkAddress: '192.168.1.0',
//   broadcastAddress: '192.168.1.255'
// }

// Parse IP address and subnet mask into CIDR info
IPv4.parseSubnet('192.168.0.1', '255.255.255.0')
// {
//   ipCount: 256,  
//   usableCount: 254,
//   cidrMask: 24, 
//   subnetMask: '255.255.255.0',
//   firstHost: '192.168.0.1', 
//   lastHost: '192.168.0.254',
//   networkAddress: '192.168.0.0',
//   broadcastAddress: '192.168.0.255' 
// }

// Create ipRange instance from start and end IPv4 integers
const range1 = IPv4.ipRange.fromLong(3232235777, 3232235876);
IPv4.range1.ipCount(); // 100
IPv4.range1.contains('192.168.1.11'); // true
IPv4.range1.long2ip() // [ '192.168.1.1', '192.168.1.100' ]

// Create ipRange instance from start and end IPv4 strings 
const range2 = IPv4.ipRange.fromString('192.168.1.1', '192.168.1.100');
IPv4.range2.ipCount() // 100
IPv4.range2.contains('192.168.1.11'); // true
IPv4.range2.ip2long() // [ 3232235777, 3232235876 ]

IPv6 Usage

const { IPv6 } = require('ip-toolkit')

// Convert IPv6 address string to number 
IPv6.ip2long('::ffff:ffff')   // 4294967295n 

// Convert IPv6 address number to string 
IPv6.ip2long(4294967295n)   // ::ffff:ffff

// Verify if the IPv6 address is valid
IPv6.isValidIP('f16c:f7ec:cfa2:e1c5:9a3c:cb08:801f:36b8') // true

// Verify if the IPv6 CIDR address is valid
IPv6.isCIDR('::9999:ffff/0') // true
IPv6.isCIDR('::9999:ffff/128') // true
IPv6.isCIDR('::9999:ffff/291') // false


// Verify if a set of CIDR ranges have conflicts
IPv6.isConflict(['2001:db8::1/120', '2001:db8::1/122'])  // true
IPv6.isConflict(['2001:db8::11/64', '2001:db8::11/48'])  // true

// Expands an abbreviated IPv6 address string into its full representation.
IPv6.expandedForm('2001:db8::1') // '2001:0db8:0000:0000:0000:0000:0000:0001'

// Compresses an expanded IPv6 address into shortened form.
IPv6.compressedForm('2001:0db8:0000:0000:0000:0000:0000:0001')  // '2001:db8::1' 

// Parse CIDR format address into address range info
IPv6.parseCIDR('::9999:ffff/118')
// {
//   ipCount: 1024n,  
//   cidrMask: 118, 
//   firstHost: '::9999:fc00', 
//   lastHost: '::9999:ffff',
// }

Raycast Extension

This project has been extended on Raycast !

Contributing

Issues and pull requests are welcome!

Star on GitHub

If you find this project useful, please star it on GitHub !

License

This project is under the MIT License.