50 lines
1.4 KiB
JavaScript
50 lines
1.4 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 = isIPRange;
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var _assertString = _interopRequireDefault(require("./util/assertString"));
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var _isIP = _interopRequireDefault(require("./isIP"));
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function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
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var subnetMaybe = /^\d{1,3}$/;
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var v4Subnet = 32;
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var v6Subnet = 128;
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function isIPRange(str) {
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var version = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : '';
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(0, _assertString.default)(str);
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var parts = str.split('/');
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// parts[0] -> ip, parts[1] -> subnet
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if (parts.length !== 2) {
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return false;
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}
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if (!subnetMaybe.test(parts[1])) {
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return false;
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}
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// Disallow preceding 0 i.e. 01, 02, ...
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if (parts[1].length > 1 && parts[1].startsWith('0')) {
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return false;
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}
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var isValidIP = (0, _isIP.default)(parts[0], version);
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if (!isValidIP) {
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return false;
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}
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// Define valid subnet according to IP's version
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var expectedSubnet = null;
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switch (String(version)) {
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case '4':
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expectedSubnet = v4Subnet;
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break;
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case '6':
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expectedSubnet = v6Subnet;
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break;
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default:
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expectedSubnet = (0, _isIP.default)(parts[0], '6') ? v6Subnet : v4Subnet;
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}
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return parts[1] <= expectedSubnet && parts[1] >= 0;
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}
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module.exports = exports.default;
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module.exports.default = exports.default;
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