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8c741f6 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 | "use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.ipRegex = void 0;
const hoek_1 = require("@hapi/hoek");
const uri_1 = require("./uri");
/**
* Generates a regular expression used to validate IP addresses.
*
* @param options - optional settings.
*
* @returns an object with the regular expression and meta data.
*/
function ipRegex(options = {}) {
// CIDR
const cidr = options.cidr || 'optional';
(0, hoek_1.assert)(['required', 'optional', 'forbidden'].includes(cidr), 'options.cidr must be one of required, optional, forbidden');
// Versions
(0, hoek_1.assert)(options.version === undefined || typeof options.version === 'string' || Array.isArray(options.version), 'options.version must be a string or an array of string');
let versions = options.version || ['ipv4', 'ipv6', 'ipvfuture'];
if (!Array.isArray(versions)) {
versions = [versions];
}
(0, hoek_1.assert)(versions.length >= 1, 'options.version must have at least 1 version specified');
for (const version of versions) {
(0, hoek_1.assert)(typeof version === 'string' && version === version.toLowerCase(), 'Invalid options.version value');
(0, hoek_1.assert)(['ipv4', 'ipv6', 'ipvfuture'].includes(version), 'options.version contains unknown version ' + version + ' - must be one of ipv4, ipv6, ipvfuture');
}
versions = Array.from(new Set(versions));
// Regex
const parts = versions.map((version) => {
// Forbidden
if (cidr === 'forbidden') {
return uri_1.ipVersions[version];
}
// Required
const cidrpart = `\\/${version === 'ipv4' ? uri_1.ipVersions.v4Cidr : uri_1.ipVersions.v6Cidr}`;
if (cidr === 'required') {
return `${uri_1.ipVersions[version]}${cidrpart}`;
}
// Optional
return `${uri_1.ipVersions[version]}(?:${cidrpart})?`;
});
const raw = `(?:${parts.join('|')})`;
const regex = new RegExp(`^${raw}$`);
return { cidr, versions, regex, raw };
}
exports.ipRegex = ipRegex;
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