42 lines
1.4 KiB
JavaScript
42 lines
1.4 KiB
JavaScript
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"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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const netmask_1 = require("netmask");
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const util_1 = require("./util");
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/**
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* True iff the IP address of the host matches the specified IP address pattern.
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*
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* Pattern and mask specification is done the same way as for SOCKS configuration.
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*
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* Examples:
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*
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* ``` js
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* isInNet(host, "198.95.249.79", "255.255.255.255")
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* // is true iff the IP address of host matches exactly 198.95.249.79.
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*
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* isInNet(host, "198.95.0.0", "255.255.0.0")
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* // is true iff the IP address of the host matches 198.95.*.*.
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* ```
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*
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* @param {String} host a DNS hostname, or IP address. If a hostname is passed,
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* it will be resoved into an IP address by this function.
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* @param {String} pattern an IP address pattern in the dot-separated format mask.
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* @param {String} mask for the IP address pattern informing which parts of the
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* IP address should be matched against. 0 means ignore, 255 means match.
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* @return {Boolean}
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*/
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async function isInNet(host, pattern, mask) {
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const family = 4;
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try {
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const ip = await (0, util_1.dnsLookup)(host, { family });
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if (typeof ip === 'string') {
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const netmask = new netmask_1.Netmask(pattern, mask);
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return netmask.contains(ip);
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}
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}
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catch (err) {
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// ignore
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}
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return false;
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}
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exports.default = isInNet;
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//# sourceMappingURL=isInNet.js.map
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