64 lines
2.0 KiB
JavaScript
64 lines
2.0 KiB
JavaScript
const os = require('os')
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const dns = require('dns')
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const util = require('util')
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module.exports = {
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/*----------------------------------------------------------------
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* Network tools
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----------------------------------------------------------------*/
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async dn2ip(host) {
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// domain name 2 ip
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if (typeof host === 'string' && host) {
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var ip = await util
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.promisify(dns.resolve)(host, 'A')
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.catch(function (err) {
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mylog.warn('WARNING : host cannot resolve to ip: ' + host)
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return null
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})
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if (ip && /^\d+\.\d+\.\d+\.\d+$/.test(ip[0])) {
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return ip[0]
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}
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}
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return null
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},
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isPrivateIp(addr) {
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return (
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/^(::f{4}:)?10\.([0-9]{1,3})\.([0-9]{1,3})\.([0-9]{1,3})$/i.test(addr) ||
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/^(::f{4}:)?192\.168\.([0-9]{1,3})\.([0-9]{1,3})$/i.test(addr) ||
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/^(::f{4}:)?172\.(1[6-9]|2\d|30|31)\.([0-9]{1,3})\.([0-9]{1,3})$/i.test(addr) ||
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/^(::f{4}:)?127\.([0-9]{1,3})\.([0-9]{1,3})\.([0-9]{1,3})$/i.test(addr) ||
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/^(::f{4}:)?169\.254\.([0-9]{1,3})\.([0-9]{1,3})$/i.test(addr) ||
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/^f[cd][0-9a-f]{2}:/i.test(addr) ||
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/^fe80:/i.test(addr) ||
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/^::1$/.test(addr) ||
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/^::$/.test(addr)
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)
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},
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getMyIp() {
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var publicIp = null
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var privateIp = null
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var self = this
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try {
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var ifaces = os.networkInterfaces()
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Object.keys(ifaces).forEach(function (ifname) {
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ifaces[ifname].forEach(function (iface) {
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if ('IPv4' === iface.family && iface.internal === false) {
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// console.log('ip='+iface.address)
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if (self.isPrivateIp(iface.address)) {
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privateIp = iface.address
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// console.log('privateIp='+privateIp)
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} else {
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publicIp = iface.address
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// console.log('publicIp='+publicIp)
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}
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}
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})
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})
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} catch (e) {
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console.log('ERROR in getMyIP(): ' + e.message)
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}
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return publicIp || privateIp
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},
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}
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