66 lines
1.7 KiB
JavaScript
66 lines
1.7 KiB
JavaScript
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'use strict';
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.default = isFQDN;
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var _assertString = require('./util/assertString');
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var _assertString2 = _interopRequireDefault(_assertString);
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var _merge = require('./util/merge');
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var _merge2 = _interopRequireDefault(_merge);
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function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
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var default_fqdn_options = {
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require_tld: true,
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allow_underscores: false,
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allow_trailing_dot: false
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};
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function isFQDN(str, options) {
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(0, _assertString2.default)(str);
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options = (0, _merge2.default)(options, default_fqdn_options);
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/* Remove the optional trailing dot before checking validity */
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if (options.allow_trailing_dot && str[str.length - 1] === '.') {
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str = str.substring(0, str.length - 1);
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}
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var parts = str.split('.');
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for (var i = 0; i < parts.length; i++) {
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if (parts[i].length > 63) {
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return false;
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}
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}
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if (options.require_tld) {
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var tld = parts.pop();
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if (!parts.length || !/^([a-z\u00a1-\uffff]{2,}|xn[a-z0-9-]{2,})$/i.test(tld)) {
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return false;
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}
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// disallow spaces
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if (/[\s\u2002-\u200B\u202F\u205F\u3000\uFEFF\uDB40\uDC20]/.test(tld)) {
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return false;
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}
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}
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for (var part, _i = 0; _i < parts.length; _i++) {
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part = parts[_i];
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if (options.allow_underscores) {
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part = part.replace(/_/g, '');
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}
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if (!/^[a-z\u00a1-\uffff0-9-]+$/i.test(part)) {
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return false;
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}
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// disallow full-width chars
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if (/[\uff01-\uff5e]/.test(part)) {
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return false;
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}
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if (part[0] === '-' || part[part.length - 1] === '-') {
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return false;
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}
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}
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return true;
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}
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module.exports = exports['default'];
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