getserverstatus.php

<?php
function loadCache(){
	if (file_exists('cache.json')) {
	  $fh = fopen('cache.json', 'a');
	  fwrite($fh, '');
	} else {
	  $fh = fopen('cache.json', 'w');
	  fwrite($fh, '');
	}
	fclose($fh);

	$stuff = file_get_contents('cache.json');
	//die($stuff);
	$a =json_decode($stuff,true);
	if($a == null)return Array('kokot');
	return $a;
}

function saveCache($cache){
	file_put_contents('cache.json', json_encode($cache));
}

function getServerInfo($ip, $port){
	//$host = '94.225.105.70';
	//$port = 777;
	$text = "\\basic\\";

	if ($sock = socket_create(AF_INET, SOCK_DGRAM, SOL_UDP))
	{
		error_reporting(E_ERROR | E_PARSE);
		try {
		    //stream_set_timeout($sock,5);
		    socket_set_option($sock,SOL_SOCKET,SO_RCVTIMEO,array('sec'=>5,'usec'=>5000));
		    if( ! socket_sendto($sock, $text , strlen($text) , 0 , $ip , $port))
		    {
		        $errorcode = socket_last_error();
		        $errormsg = socket_strerror($errorcode);
		         
		        die("Could not send data: [$errorcode] $errormsg \n");
		    }
		         
		    //Now receive reply from server and print it
		    //socket_set_nonblock($sock);
		    $a = socket_recv($sock, $reply, 2048, 0);
		    if(0 == $a || $a == FALSE)
		    {
		        $errorcode = socket_last_error();
		        $errormsg = socket_strerror($errorcode);
		         
		        return json_encode(Array('error'=>$errorcode));
		    }
		    //die("test");

		    $chunks = explode('\\', $reply);

		    $o = array();
		    for ($i = 1; $i < count($chunks); $i=$i + 2) {
		        $o[$chunks[$i]] = $chunks[$i + 1];
		    }
		    
		    return json_encode($o);
		} catch (Exception $e) {
		    return json_encode(Array('error'=>$e));
		}
	}
	else die("bs");
}

function tryGettingFromCache($ip, $port, $cache){
	if(array_key_exists($ip.$port,$cache)){
		$t1 = strtotime($cache[$ip.$port]['time']);
		$t2 = strtotime(date("Y-m-d H:i:s"));

		if($t2 - $t1 < 10)return $cache[$ip.$port]['stuff'];
	}
	return null;
}



$cache = loadCache();
//die(json_encode($cache));
$stuff = tryGettingFromCache($_GET['ip'],$_GET['port'],$cache);
if($stuff == null)$stuff = getServerInfo($_GET['ip'],$_GET['port']);

header("Content-type: application/json");
header("Access-Control-Allow-Origin: *");
echo $stuff;

$cache[$_GET['ip'].$_GET['port']] = [];
$cache[$_GET['ip'].$_GET['port']]['time'] = date("Y-m-d H:i:s");
$cache[$_GET['ip'].$_GET['port']]['stuff'] = $stuff;
saveCache($cache);
?>