View source for Manual:GPS-tracking

The following article explains how to create a simple vehicle tracking system using the RouterOS GPS function and scripting. 

== Method == 

This approach uses the recently introduced HTTP POST capability of RouterOS Fetch tool. It allows you to POST any kind of data to a webserver, right from RouterOS command line. Of course, you can use scripting, to fill the POST data with variables. The posted data will be written to an SQLITE3 database (file is created, if it doesn't exist) and then, read from the database and fead into a Leaflet.js PolyLine array. This is a proof of concept example, there is no authentication, security or error handling. 

== Requirements ==

* Webserver of your choice
* PHP
* SQLite3 module for PHP 
* RouterOS device with a working GPS module
* RouterOS v6.40rc30 or above
* Set GPS format in RouterOS to '''dd'''

== RouterOS script == 

You can run this script in the Scheduler tool, with an interval of 1s, to have your coordinates sent every 1 seconds. 

<pre>
{
:global lat
:global lon
/system gps monitor once do={
:set $lat $("latitude")
:set $lon $("longitude")
}
tool fetch mode=http url="http://YOURSERVER.com/index.php" port=80 http-method=post http-data=("{\"lat\":\"" . $lat . "\",\"lon\":\"" . $lon . "\"}") http-header-field="Content-Type: application/json" 
:put ("{\"lat\":\"" . $lat . "\",\"lon\":\"" . $lon . "\"}")
}
</pre>

== index.php file == 

Create an empty directory called '''sqlite_db''' next to the index.php file.
Make sure that directory and files are writable by the group with '''chmod -R a+w sqlite_db/'''

<pre>
<?php
$loc = dirname(__FILE__).'/sqlite_db/coord.db';
$db = new SQLite3($loc,SQLITE3_OPEN_READWRITE | SQLITE3_OPEN_CREATE);
$raw = file_get_contents('php://input');
$raw = preg_replace('/\\x00/','',$raw);
$data = json_decode($raw);

if (!empty($data) && is_object($data) && property_exists($data,'lat') && property_exists($data,'lon')){
    if(file_exists($loc)) echo 'exists!'.chr(0xa);
    $src = 'SELECT name FROM sqlite_master WHERE type=\'table\' AND name=\'coordinates\'';
    $res = $db->querySingle($src);
    if (count($res)==0){
            $db->exec('CREATE TABLE coordinates (latitude TEXT, longitude TEXT, time TIMESTAMP DEFAULT CURRENT_TIMESTAMP, added TIMESTAMP DEFAULT CURRENT_TIMESTAMP ) ');
    }
    
$regex = '/^(|\-)([0-9]{2,3}\.[0-9]{0,8})$/';

if (preg_match($regex,$data->lat) && preg_match($regex,$data->lon) )
	{
		$lat = $data->lat;
		$lon = $data->lon;
	}
	$ins = 'INSERT INTO coordinates (latitude,longitude) VALUES (\''.SQLite3::escapeString($lat).'\',\''.SQLite3::escapeString($lon).'\')';
	$db->exec($ins);
	die();
}
?>

<!DOCTYPE html>
<html>
<head>
  <link rel="stylesheet" href="https://unpkg.com/leaflet@1.3.1/dist/leaflet.css" integrity="sha512-Rksm5RenBEKSKFjgI3a41vrjkw4EVPlJ3+OiI65vTjIdo9brlAacEuKOiQ5OFh7cOI1bkDwLqdLw3Zg0cRJAAQ==" crossorigin=""/>
  <script src="https://unpkg.com/leaflet@1.3.1/dist/leaflet.js" integrity="sha512-/Nsx9X4HebavoBvEBuyp3I7od5tA0UzAxs+j83KgC8PU0kgB4XiK4Lfe4y4cgBtaRJQEIFCW+oC506aPT2L1zw==" crossorigin=""></script>
</head>
<body>
<div id="map" style="width: 800px; height: 600px;"></div>
<script>
var map = L.map('map').setView([0,0], 4);
L.tileLayer('http://{s}.tile.osm.org/{z}/{x}/{y}.png', {attribution: '<a href="http://osm.org/copyright">OSM</a>'}).addTo(map);

<?php
    if($result = $db->query('SELECT latitude,longitude FROM coordinates')){
    echo ' var latlngs = [ ';
    while($obj = $result->fetchArray()){
    	if (!is_array($obj) || !isset($obj['latitude']) || !isset($obj['longitude']) || empty($obj['latitude']) || empty($obj['longitude'])) continue;
    	echo '["'. $obj['latitude'].'","'.$obj['longitude'].'"],';
    }
    echo ']; ';
    } else
     echo('//'.$db->lastErrorMsg().chr(0xa));  
	 echo($data);
?>
var polyline = L.polyline(latlngs, {color: 'red'}).addTo(map);
map.fitBounds(polyline.getBounds());
</script>
</body>
</html>
</pre>

== Result == 

[[File:Gpstracker.png|1000px]]