Skip to content

add function to get IP representation of subnet mask #95

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
drahnieR wants to merge 4 commits into
base: master
Choose a base branch
from
+20 −1
Open

add function to get IP representation of subnet mask #95

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
4 commits
Select commit Hold shift + click to select a range
f788aab
add function to get IP representation of subnet mask
drahnieR Jan 3, 2020
db425bf
add test case for Address4.subnetMaskIP()
drahnieR Jan 6, 2020
c18fabd
use .correctForm() instead of .address
drahnieR Jan 6, 2020
0bac360
bump package version
drahnieR Jan 6, 2020
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
11 changes: 11 additions & 0 deletions lib/ipv4.js
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -317,4 +317,15 @@ Address4.prototype.binaryZeroPad = function () {
return padStart(this.bigInteger().toString(2), constants.BITS, '0');
};

/**
* Returns the ip representation of subnet mask
* @memberof Address4
* @instance
* @returns {string} subnetMaskIP
*/
Address4.prototype.subnetMaskIP = function () {
const shiftBits = constants.BITS - this.subnetMask;
return Address4.fromInteger(((0xffffffff << shiftBits) & 0xffffffff) >>> 0).correctForm()
};

module.exports = Address4;
2 changes: 1 addition & 1 deletion package.json
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -7,7 +7,7 @@
"browser",
"validation"
],
"version": "6.2.0",
"version": "6.2.1",
"author": "Beau Gunderson <[email protected]> (https://beaugunderson.com/)",
"license": "MIT",
"main": "ip-address.js",
Expand Down
8 changes: 8 additions & 0 deletions test/functionality-v4-test.js
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -259,4 +259,12 @@ describe('v4', function () {
});
});
});

describe('An IP with CIDR notation', function () {
var topic = new Address4('127.0.0.2/20');

it('should generate IP representation of subnet mask correctly', function () {
topic.subnetMaskIP().should.equal('255.255.240.0');
});
});
});