A cli tool to quickly create and manage nginx server blocks. https://up.js.org
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// Module courtesy of TRGWII
// Original: https://github.com/trgwii/isFQDN
'use strict';
var fs = require('fs-extra');
// Official list of TLDs should be fetched from:
// https://data.iana.org/TLD/tlds-alpha-by-domain.txt
// You must have received a copy of the list along with `up`
// Run `npm run build` to update the cached list
function isFQDN(domain) {
// Importing and parsing `tlds.txt` file
var tlds = fs.readFileSync('./assets/tlds.txt', 'utf8')
.split(/[\r\n]+/)
.filter(x => !x.startsWith('#'));
if (domain.length > 253) {
return false;
}
var labels = domain.split('.').reverse();
if (labels.length < 2) {
return false;
}
var tld = labels[0];
if (!tlds.includes(tld.toUpperCase())) {
return false;
}
for (var label of labels) {
const len = label.length;
if (len > 63 || len === 0) {
return false;
}
for (let i = 0; i < len; i++) {
const char = label[i];
if ((i === 0 || i === len - 1) && char === '-') {
return false;
}
if (!char.match(/^[a-zA-Z0-9-]$/)) {
return false;
}
}
}
return true;
};
module.exports = isFQDN;