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Mini Shell
Mini Shell
'use strict';
// @ts-check
// ==================================================================================
// internet.js
// ----------------------------------------------------------------------------------
// Description: System Information - library
// for Node.js
// Copyright: (c) 2014 - 2020
// Author: Sebastian Hildebrandt
// ----------------------------------------------------------------------------------
// License: MIT
// ==================================================================================
// 12. Internet
// ----------------------------------------------------------------------------------
const exec = require('child_process').exec;
const util = require('./util');
let _platform = process.platform;
const _linux = (_platform === 'linux');
const _darwin = (_platform === 'darwin');
const _windows = (_platform === 'win32');
const _freebsd = (_platform === 'freebsd');
const _openbsd = (_platform === 'openbsd');
const _netbsd = (_platform === 'netbsd');
const _sunos = (_platform === 'sunos');
// --------------------------
// check if external site is available
function inetChecksite(url, callback) {
return new Promise((resolve) => {
process.nextTick(() => {
const urlSanitized = util.sanitizeShellString(url).toLowerCase();
let result = {
url: urlSanitized,
ok: false,
status: 404,
ms: -1
};
if (urlSanitized) {
let t = Date.now();
if (_linux || _freebsd || _openbsd || _netbsd || _darwin || _sunos) {
let args = ' -I --connect-timeout 5 -m 5 ' + urlSanitized + ' 2>/dev/null | head -n 1 | cut -d " " -f2';
let cmd = 'curl';
exec(cmd + args, function (error, stdout) {
let statusCode = parseInt(stdout.toString());
result.status = statusCode || 404;
result.ok = !error && (statusCode === 200 || statusCode === 301 || statusCode === 302 || statusCode === 304);
result.ms = (result.ok ? Date.now() - t : -1);
if (callback) { callback(result); }
resolve(result);
});
}
if (_windows) { // if this is stable, this can be used for all OS types
const http = (urlSanitized.startsWith('https:') ? require('https') : require('http'));
try {
http.get(urlSanitized, (res) => {
const statusCode = res.statusCode;
result.status = statusCode || 404;
result.ok = (statusCode === 200 || statusCode === 301 || statusCode === 302 || statusCode === 304);
if (statusCode !== 200) {
res.resume();
result.ms = (result.ok ? Date.now() - t : -1);
if (callback) { callback(result); }
resolve(result);
} else {
res.on('data', () => { });
res.on('end', () => {
result.ms = (result.ok ? Date.now() - t : -1);
if (callback) { callback(result); }
resolve(result);
});
}
}).on('error', () => {
if (callback) { callback(result); }
resolve(result);
});
} catch (err) {
if (callback) { callback(result); }
resolve(result);
}
}
} else {
if (callback) { callback(result); }
resolve(result);
}
});
});
}
exports.inetChecksite = inetChecksite;
// --------------------------
// check inet latency
function inetLatency(host, callback) {
// fallback - if only callback is given
if (util.isFunction(host) && !callback) {
callback = host;
host = '';
}
host = host || '8.8.8.8';
const hostSanitized = util.sanitizeShellString(host);
return new Promise((resolve) => {
process.nextTick(() => {
let cmd;
if (_linux || _freebsd || _openbsd || _netbsd || _darwin) {
if (_linux) {
cmd = 'ping -c 2 -w 3 ' + hostSanitized + ' | grep rtt';
}
if (_freebsd || _openbsd || _netbsd) {
cmd = 'ping -c 2 -t 3 ' + hostSanitized + ' | grep round-trip';
}
if (_darwin) {
cmd = 'ping -c 2 -t 3 ' + hostSanitized + ' | grep avg';
}
exec(cmd, function (error, stdout) {
let result = -1;
if (!error) {
const line = stdout.toString().split('=');
if (line.length > 1) {
const parts = line[1].split('/');
if (parts.length > 1) {
result = parseFloat(parts[1]);
}
}
}
if (callback) { callback(result); }
resolve(result);
});
}
if (_sunos) {
exec('ping -s -a ' + hostSanitized + ' 56 2 | grep avg', { timeout: 3000 }, function (error, stdout) {
let result = -1;
if (!error) {
const line = stdout.toString().split('=');
if (line.length > 1) {
const parts = line[1].split('/');
if (parts.length > 1) {
result = parseFloat(parts[1].replace(',', '.'));
}
}
}
if (callback) { callback(result); }
resolve(result);
});
}
if (_windows) {
let result = -1;
try {
exec('ping ' + hostSanitized + ' -n 1', util.execOptsWin, function (error, stdout) {
if (!error) {
let lines = stdout.toString().split('\r\n');
lines.shift();
lines.forEach(function (line) {
if ((line.toLowerCase().match(/ms/g) || []).length === 3) {
let l = line.replace(/ +/g, ' ').split(' ');
if (l.length > 6) {
result = parseFloat(l[l.length - 1]);
}
}
});
}
if (callback) { callback(result); }
resolve(result);
});
} catch (e) {
if (callback) { callback(result); }
resolve(result);
}
}
});
});
}
exports.inetLatency = inetLatency;
Zerion Mini Shell 1.0