Manual:GPS-tracking: Difference between revisions

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== Method ==  
== 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.  
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 ==
== Requirements ==
Line 12: Line 12:
* RouterOS device with a working GPS module
* RouterOS device with a working GPS module
* RouterOS v6.40rc30 or above
* RouterOS v6.40rc30 or above
 
* Set GPS format in RouterOS to '''dd'''
Currently RouterOS only outputs DMS format coordinates, this makes the required PHP code substantially larger, because conversion of coordinate systems is required. Once DD coordinate format will be suppported in RouterOS, the code becomes even simpler.


== RouterOS script ==  
== RouterOS script ==  


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


<pre>
<pre>
      {
{
      {
:global lat
      :global lat
:global lon
      :global lon
/system gps monitor once do={
      /system gps monitor once do={
:set $lat $("latitude")
      :set $lat $("latitude")
:set $lon $("longitude")
      :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"  
      tool fetch mode=http url="http://10.55.8.160/index.php" port=8080 http-method=post http-data=("{\"lat\":\"" . $lat . "\",\"lon\":\"" . $lon . "\"}") http-content-type="application/json"
:put ("{\"lat\":\"" . $lat . "\",\"lon\":\"" . $lon . "\"}")
      :put ("{\"lat\":\"" . $lat . "\",\"lon\":\"" . $lon . "\"}")
}
      }
      }
</pre>
</pre>


== index.php file ==  
== index.php file ==  


{{Note|Create an empty directory called *sqlite_db* next to the 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>
<pre>
<?php
<?php
// Converting DMS ( Degrees / minutes / seconds ) to decimal format
function DMStoDD($deg,$min,$sec)
{
return $deg+((($min*60)+($sec))/3600);
}
// make sure this directory exists and is writeable. file will be created automatically upon first fetch
$loc = dirname(__FILE__).'/sqlite_db/coord.db';
$loc = dirname(__FILE__).'/sqlite_db/coord.db';
$db = new SQLite3($loc,SQLITE3_OPEN_READWRITE | SQLITE3_OPEN_CREATE);
$db = new SQLite3($loc,SQLITE3_OPEN_READWRITE | SQLITE3_OPEN_CREATE);
$raw = file_get_contents('php://input');
$raw = file_get_contents('php://input');
$raw = preg_replace('/\\x00/','',$raw);
$data = json_decode($raw);
$data = json_decode($raw);
if (!empty($data) && is_object($data) && property_exists($data,'lat') && property_exists($data,'lon')){
if (!empty($data) && is_object($data) && property_exists($data,'lat') && property_exists($data,'lon')){
     if(file_exists($loc)) echo 'exists!'.chr(0xa);
     if(file_exists($loc)) echo 'exists!'.chr(0xa);
Line 59: Line 51:
             $db->exec('CREATE TABLE coordinates (latitude TEXT, longitude TEXT, time TIMESTAMP DEFAULT CURRENT_TIMESTAMP, added TIMESTAMP DEFAULT CURRENT_TIMESTAMP ) ');
             $db->exec('CREATE TABLE coordinates (latitude TEXT, longitude TEXT, time TIMESTAMP DEFAULT CURRENT_TIMESTAMP, added TIMESTAMP DEFAULT CURRENT_TIMESTAMP ) ');
     }
     }
$lat = $lon = '';
   
$regex = '/^(|\-)([0-9]{2,3}\.[0-9]{0,8})$/';


// the below section splits DMS coordinates apart and converts them to DD format via above function
if (preg_match($regex,$data->lat) && preg_match($regex,$data->lon) )
if(preg_match('/^(N|E|W|S)\ (\d+)\ (\d+)\'\ (\d+\.\d+)/',$data->lat,$result)){
{
$lat = DMStoDD( $result[2], $result[3], $result[4]);
$lat = $data->lat;
}
$lon = $data->lon;
if(preg_match('/^(N|E|W|S)\ (\d+)\ (\d+)\'\ (\d+\.\d+)/',$data->lon,$result)){
$lon = DMStoDD( $result[2], $result[3], $result[4]);
}
}
$ins = 'INSERT INTO coordinates (latitude,longitude) VALUES (\''.SQLite3::escapeString($lat).'\',\''.SQLite3::escapeString($lon).'\')';
$ins = 'INSERT INTO coordinates (latitude,longitude) VALUES (\''.SQLite3::escapeString($lat).'\',\''.SQLite3::escapeString($lon).'\')';
$db->exec($ins);
$db->exec($ins);
echo 'added!'.chr(0xa);
die();
die();
}
}
Line 86: Line 75:
<script>
<script>
var map = L.map('map').setView([0,0], 4);
var map = L.map('map').setView([0,0], 4);
L.tileLayer('http://{s}.tile.osm.org/{z}/{x}/{y}.png', {
L.tileLayer('http://{s}.tile.osm.org/{z}/{x}/{y}.png', {attribution: '<a href="http://osm.org/copyright">OSM</a>'}).addTo(map);
attribution: '&copy; <a href="http://osm.org/copyright">OpenStreetMap</a> contributors'
 
}).addTo(map);
<?php
<?php
     $result = $db->query('SELECT latitude,longitude FROM coordinates') or die($db->errorInfo()[2]);; 
     if($result = $db->query('SELECT latitude,longitude FROM coordinates')){
     echo ' var latlngs = [ ';
     echo ' var latlngs = [ ';
     while($obj = $result->fetchArray()){
     while($obj = $result->fetchArray()){
     echo ' [ ' . $obj['latitude']. ' , '. $obj['longitude'] .' ], ';
    if (!is_array($obj) || !isset($obj['latitude']) || !isset($obj['longitude']) || empty($obj['latitude']) || empty($obj['longitude'])) continue;
     echo '["'. $obj['latitude'].'","'.$obj['longitude'].'"],';
     }
     }
     echo ' ]; ';
     echo ']; ';
    } else
    echo('//'.$db->lastErrorMsg().chr(0xa)); 
echo($data);
?>
?>
var polyline = L.polyline(latlngs, {color: 'red'}).addTo(map);
var polyline = L.polyline(latlngs, {color: 'red'}).addTo(map);
Line 103: Line 95:
</html>
</html>
</pre>
</pre>
== Result ==
[[File:Gpstracker.png|1000px]]

Latest revision as of 10:44, 22 March 2019

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. 

{
: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 . "\"}")
}

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/ 

<?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>

Result

Gpstracker.png

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