mirror of
https://github.com/louislam/uptime-kuma.git
synced 2024-09-07 09:51:57 +00:00
119 lines
3.2 KiB
JavaScript
119 lines
3.2 KiB
JavaScript
![]() |
// https://github.com/ben-bradley/ping-lite/blob/master/ping-lite.js
|
||
|
// Fixed on Windows
|
||
|
|
||
|
var spawn = require('child_process').spawn,
|
||
|
events = require('events'),
|
||
|
fs = require('fs'),
|
||
|
WIN = /^win/.test(process.platform),
|
||
|
LIN = /^linux/.test(process.platform),
|
||
|
MAC = /^darwin/.test(process.platform);
|
||
|
|
||
|
module.exports = Ping;
|
||
|
|
||
|
function Ping(host, options) {
|
||
|
if (!host)
|
||
|
throw new Error('You must specify a host to ping!');
|
||
|
|
||
|
this._host = host;
|
||
|
this._options = options = (options || {});
|
||
|
|
||
|
events.EventEmitter.call(this);
|
||
|
|
||
|
if (WIN) {
|
||
|
this._bin = 'c:/windows/system32/ping.exe';
|
||
|
this._args = (options.args) ? options.args : [ '-n', '1', '-w', '5000', host ];
|
||
|
this._regmatch = /[><=]([0-9.]+?)ms/;
|
||
|
}
|
||
|
else if (LIN) {
|
||
|
this._bin = '/bin/ping';
|
||
|
this._args = (options.args) ? options.args : [ '-n', '-w', '2', '-c', '1', host ];
|
||
|
this._regmatch = /=([0-9.]+?) ms/; // need to verify this
|
||
|
}
|
||
|
else if (MAC) {
|
||
|
this._bin = '/sbin/ping';
|
||
|
this._args = (options.args) ? options.args : [ '-n', '-t', '2', '-c', '1', host ];
|
||
|
this._regmatch = /=([0-9.]+?) ms/;
|
||
|
}
|
||
|
else {
|
||
|
throw new Error('Could not detect your ping binary.');
|
||
|
}
|
||
|
|
||
|
if (!fs.existsSync(this._bin))
|
||
|
throw new Error('Could not detect '+this._bin+' on your system');
|
||
|
|
||
|
this._i = 0;
|
||
|
|
||
|
return this;
|
||
|
}
|
||
|
|
||
|
Ping.prototype.__proto__ = events.EventEmitter.prototype;
|
||
|
|
||
|
// SEND A PING
|
||
|
// ===========
|
||
|
Ping.prototype.send = function(callback) {
|
||
|
var self = this;
|
||
|
callback = callback || function(err, ms) {
|
||
|
if (err) return self.emit('error', err);
|
||
|
else return self.emit('result', ms);
|
||
|
};
|
||
|
|
||
|
var _ended, _exited, _errored;
|
||
|
|
||
|
this._ping = spawn(this._bin, this._args); // spawn the binary
|
||
|
|
||
|
this._ping.on('error', function(err) { // handle binary errors
|
||
|
_errored = true;
|
||
|
callback(err);
|
||
|
});
|
||
|
|
||
|
this._ping.stdout.on('data', function(data) { // log stdout
|
||
|
this._stdout = (this._stdout || '') + data;
|
||
|
});
|
||
|
|
||
|
this._ping.stdout.on('end', function() {
|
||
|
_ended = true;
|
||
|
if (_exited && !_errored) onEnd.call(self._ping);
|
||
|
});
|
||
|
|
||
|
this._ping.stderr.on('data', function(data) { // log stderr
|
||
|
this._stderr = (this._stderr || '') + data;
|
||
|
});
|
||
|
|
||
|
this._ping.on('exit', function(code) { // handle complete
|
||
|
_exited = true;
|
||
|
if (_ended && !_errored) onEnd.call(self._ping);
|
||
|
});
|
||
|
|
||
|
function onEnd() {
|
||
|
var stdout = this.stdout._stdout,
|
||
|
stderr = this.stderr._stderr,
|
||
|
ms;
|
||
|
|
||
|
if (stderr)
|
||
|
return callback(new Error(stderr));
|
||
|
else if (!stdout)
|
||
|
return callback(new Error('No stdout detected'));
|
||
|
|
||
|
ms = stdout.match(self._regmatch); // parse out the ##ms response
|
||
|
ms = (ms && ms[1]) ? Number(ms[1]) : ms;
|
||
|
|
||
|
callback(null, ms);
|
||
|
}
|
||
|
};
|
||
|
|
||
|
// CALL Ping#send(callback) ON A TIMER
|
||
|
// ===================================
|
||
|
Ping.prototype.start = function(callback) {
|
||
|
var self = this;
|
||
|
this._i = setInterval(function() {
|
||
|
self.send(callback);
|
||
|
}, (self._options.interval || 5000));
|
||
|
self.send(callback);
|
||
|
};
|
||
|
|
||
|
// STOP SENDING PINGS
|
||
|
// ==================
|
||
|
Ping.prototype.stop = function() {
|
||
|
clearInterval(this._i);
|
||
|
};
|