bootstrapvalidator/src/js/validator/uri.js

(function($) {
    $.fn.bootstrapValidator.i18n.uri = $.extend($.fn.bootstrapValidator.i18n.uri || {}, {
        'default': 'Please enter a valid URI'
    });

    $.fn.bootstrapValidator.validators.uri = {
        html5Attributes: {
            message: 'message',
            allowlocal: 'allowLocal',
            protocol: 'protocol'
        },

        enableByHtml5: function($field) {
            return ('url' === $field.attr('type'));
        },

        /**
         * Return true if the input value is a valid URL
         *
         * @param {BootstrapValidator} validator The validator plugin instance
         * @param {jQuery} $field Field element
         * @param {Object} options
         * - message: The error message
         * - allowLocal: Allow the private and local network IP. Default to false
         * - protocol: The protocols, separated by a comma. Default to "http, https, ftp"
         * @returns {Boolean}
         */
        validate: function(validator, $field, options) {
            var value = $field.val();
            if (value === '') {
                return true;
            }

            // Credit to https://gist.github.com/dperini/729294
            //
            // Regular Expression for URL validation
            //
            // Author: Diego Perini
            // Updated: 2010/12/05
            //
            // the regular expression composed & commented
            // could be easily tweaked for RFC compliance,
            // it was expressly modified to fit & satisfy
            // these test for an URL shortener:
            //
            //   http://mathiasbynens.be/demo/url-regex
            //
            // Notes on possible differences from a standard/generic validation:
            //
            // - utf-8 char class take in consideration the full Unicode range
            // - TLDs are mandatory unless `allowLocal` is true
            // - protocols have been restricted to ftp, http and https only as requested
            //
            // Changes:
            //
            // - IP address dotted notation validation, range: 1.0.0.0 - 223.255.255.255
            //   first and last IP address of each class is considered invalid
            //   (since they are broadcast/network addresses)
            //
            // - Added exclusion of private, reserved and/or local networks ranges
            //   unless `allowLocal` is true
            //
            // - Added possibility of choosing a custom protocol
            //
            var allowLocal = options.allowLocal === true || options.allowLocal === 'true',
                protocol   = (options.protocol || 'http, https, ftp').split(',').join('|').replace(/\s/g, ''),
                urlExp     = new RegExp(
                    "^" +
                    // protocol identifier
                    "(?:(?:" + protocol + ")://)" +
                    // user:pass authentication
                    "(?:\\S+(?::\\S*)?@)?" +
                    "(?:" +
                    // IP address exclusion
                    // private & local networks
                    (allowLocal
                        ? ''
                        : ("(?!(?:10|127)(?:\\.\\d{1,3}){3})" +
                           "(?!(?:169\\.254|192\\.168)(?:\\.\\d{1,3}){2})" +
                           "(?!172\\.(?:1[6-9]|2\\d|3[0-1])(?:\\.\\d{1,3}){2})")) +
                    // IP address dotted notation octets
                    // excludes loopback network 0.0.0.0
                    // excludes reserved space >= 224.0.0.0
                    // excludes network & broadcast addresses
                    // (first & last IP address of each class)
                    "(?:[1-9]\\d?|1\\d\\d|2[01]\\d|22[0-3])" +
                    "(?:\\.(?:1?\\d{1,2}|2[0-4]\\d|25[0-5])){2}" +
                    "(?:\\.(?:[1-9]\\d?|1\\d\\d|2[0-4]\\d|25[0-4]))" +
                    "|" +
                    // host name
                    "(?:(?:[a-z\\u00a1-\\uffff0-9]+-?)*[a-z\\u00a1-\\uffff0-9]+)" +
                    // domain name
                    "(?:\\.(?:[a-z\\u00a1-\\uffff0-9]+-?)*[a-z\\u00a1-\\uffff0-9]+)*" +
                    // TLD identifier
                    "(?:\\.(?:[a-z\\u00a1-\\uffff]{2,}))" +
                    // Allow intranet sites (no TLD) if `allowLocal` is true
                    (allowLocal ? '?' : '') +
                    ")" +
                    // port number
                    "(?::\\d{2,5})?" +
                    // resource path
                    "(?:/[^\\s]*)?" +
                    "$", "i"
            );

            return urlExp.test(value);
        }
    };
}(window.jQuery));