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46 lines
1.0 KiB
46 lines
1.0 KiB
'use strict'; |
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var parse = require('url-parse'); |
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/** |
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* Transform an URL to a valid origin value. |
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* |
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* @param {String|Object} url URL to transform to it's origin. |
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* @returns {String} The origin. |
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* @api public |
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*/ |
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function origin(url) { |
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if ('string' === typeof url) url = parse(url); |
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// |
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// 6.2. ASCII Serialization of an Origin |
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// http://tools.ietf.org/html/rfc6454#section-6.2 |
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// |
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if (!url.protocol || !url.hostname) return 'null'; |
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// |
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// 4. Origin of a URI |
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// http://tools.ietf.org/html/rfc6454#section-4 |
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// |
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// States that url.scheme, host should be converted to lower case. This also |
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// makes it easier to match origins as everything is just lower case. |
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// |
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return (url.protocol +'//'+ url.host).toLowerCase(); |
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} |
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/** |
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* Check if the origins are the same. |
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* |
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* @param {String} a URL or origin of a. |
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* @param {String} b URL or origin of b. |
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* @returns {Boolean} |
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* @api public |
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*/ |
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origin.same = function same(a, b) { |
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return origin(a) === origin(b); |
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}; |
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// |
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// Expose the origin |
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// |
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module.exports = origin;
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