<?
//	SYNOPSIS: Demonstration Consumption of REST HTTP Parameters from
//	Franson GPSGate in to create simple XML database of position
//
//	IMPLEMENTATION NOTES: Server-side: Tested with PHP 5.x on 
//	IIS server with IE client.  Client-side: Tested with Franson 
//	GPSGate v2.5.0.207 on PC running Windows XP SP2.
//	You need to create an empty placeholder file named 
//	position.xml in the same Web-accessible directory
//	as this file (consumeGPSGate.php).  Must grant "modify" 
//	permissions to position.xml on sever.  Use your Web browser to 
//	view position.xml to get the latest position after 
//	GPSGate posts the HTTP REST parameters to this 
//	file (consumeGPSGate.php).  Limitations: Currently stores 
//	only one position based on intervals set at GPSGate client. 
//
//	REDISTRIBUTION: Buy a Franson GPSGate License and feel free to 
//	use this code per GNU GENERAL PUBLIC LICENSE (GNU - GPL) Version 3.0 
//	http://www.gnu.org/licenses/gpl-3.0.txt 
//
//	Thank you Johan and the rest of the franson.com team for helping
//	me out!...8 July 2007 - Tony in San Diego (tonyh on franson.com forum)


//----------------------------------------------
//	Use dummy date to prevent caching of Web page and force refresh
//----------------------------------------------
// 	Date in the past
header("Expires: Mon, 26 Jul 1997 05:00:00 GMT"); 
// 	always modified
header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
// 	HTTP/1.1
header("Cache-Control: no-store, no-cache, must-revalidate");
header("Cache-Control: post-check=0, pre-check=0", false);
// 	HTTP/1.0
header("Pragma: no-cache");
 

//----------------------------------------------
//	Set content type for XML
//----------------------------------------------
header("Content-type:text/xml");


//----------------------------------------------
//	REST HTTP Parameters
//----------------------------------------------
//	Decimal Degrees - WGS1984 Datum
$lat = $_GET["latitude"];
$lon = $_GET["longitude"];

//	meters above sea level
$alt_m = $_GET["altitude"];

//	knots
$vel_kt = $_GET["speed"];

//	Degrees
$head = $_GET["heading"];

//	UTC - YYYYMMDD
$date = $_GET["date"];

//	UTC - HHMMSS.sss
$time = $_GET["time"];

$user = $_GET["username"];
$pwd_encry = $_GET["pw"];


//----------------------------------------------
//	SI - English Conversions
//----------------------------------------------
//	Feet above sea level
$alt_ft = 3.2808399 * floatval($alt_m);

//	Miles per hour
$vel_mph = 1.15077945 * floatval($vel_kt);


//----------------------------------------------
//	Date - time parsing and RFC 822 date creation
//----------------------------------------------
//	Set timezone to UTC
date_default_timezone_set("UTC");

$year = substr($date, 0, 4);
$month = substr($date, 4, 2);
$day = substr($date, 6, 2);
$hour = substr($time, 0, 2);
$minute = substr($time, 2, 2);
//	Decimal seconds truncated
$second = substr($time, 4, 2);

//	RFC 822 Format: "Day, DD MMM YYYY HH:MM:SS UTC"
$date_RFC822 = date(DATE_RFC822, mktime($hour, $minute, $second, $month, $day, $year));


//----------------------------------------------
//	Simple dynamic generation of XML document
//----------------------------------------------
//	Declare new XML document
$dom = DOMDocument::loadXML('<positiondatabase/>');
$dom->preserveWhiteSpace = false;
$dom->encoding = "UTF-8";

//	documentElement refers to the root element!
$positiondatabase = $dom->documentElement;

//	Web 2.0 Metadata for reusability using W3 geo:lat and geo:long namespace standards
$positiondatabase->setAttributeNS('http://www.w3.org/2000/xmlns/','xmlns:geo','http://www.w3.org/2003/01/geo/wgs84_pos#');

//	Declare individual XML elements
$position = $dom->createElement("position");
$geolat = $dom->createElementNS("http://www.w3.org/2003/01/geo/wgs84_pos#","geo:lat",$lat);
$geolong = $dom->createElementNS("http://www.w3.org/2003/01/geo/wgs84_pos#","geo:long",$lon);
$alt_meters = $dom->createElement("altitude_m",$alt_m);
$alt_feet = $dom->createElement("altitude_ft",$alt_ft);
$vel_knots = $dom->createElement("velocity_kt",$vel_kt);
$vel_milesperhour = $dom->createElement("velocity_mph",$vel_mph);
$heading = $dom->createElement("heading_deg",$head);
$date_time = $dom->createElement("date_rfc822",$date_RFC822);
$username = $dom->createElement("user_name",$user);
$pwd_encryted = $dom->createElement("user_pwd_encrypt",$pwd_encry);

//	Inserting individual XML elements

//	append child nodes to root element
$dom->documentElement->appendChild($position);

//	append grandchild nodes to child elements
$position->appendChild($geolat);
$position->appendChild($geolong);
$position->appendChild($alt_meters);
$position->appendChild($alt_feet);
$position->appendChild($vel_knots);
$position->appendChild($vel_milesperhour);
$position->appendChild($heading);
$position->appendChild($date_time);
$position->appendChild($username);
$position->appendChild($pwd_encrypted);


//----------------------------------------------
//	XML Output Processing
//----------------------------------------------
//	Save new XML file output
$output = $dom->save('position.xml');

//	Make output readable
$dom->preserveWhitespace = false;
$dom->formatOutput = true;

//	Print XML file output to client display
print $dom->saveXML();
?>

quote:

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Originally posted by johan

Yes, there is some problems to save Unicode paths in the settings files. We are aware of this limitation, and will try to fix it as soon as possible.

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quote:

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Originally posted by johan

We don't have a fix yet, but it is on our radar.

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quote:

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Originally posted by johan

No, you need to authenticate the request using the username + password you get in the URL.

Regards,
Johan

Franson Support

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quote:

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Originally posted by johan

How to send GPS data using HTTP to a web site

This article is for developers who wants to post GPS data to his own web site using HTTP.

GpsGate 2.5.0 build 207 (and later) can send GPS data over http. Any web server can receive and process the position data sent to it.

Please follow those steps to configure GpsGate.

7. Set "Server" to your web server address E.g. www.myaddress.com
8. Set the "File path" to the script address. E.g. /gpsgate.php if /gpsgate.php is the page on your web server to process the requests. Do not forget the first "/".
8. Click OK
9. Now configure in which intervals you want GpsGate to send data to your web site.
10. Click OK.

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